€360 Find Cheap Flights to Washington – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ireland to Washington departing on 19/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 28% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Best Washington Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
Seattle
Seattle1 stop€497
Spokane
Spokane2 stops€781
Seattle
Seattle1 stop€497
Spokane
Spokane2 stops€781

Book Cheap Washington Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Washington that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Washington

Sat, 19 Sep - Sat, 26 Sep
Scandinavian Airlines Logo
19:05 - 13:45DUB  Dublin-SEA Seattle/Tacoma Intl
26h 40m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
15:55 - 18:25SEA  Seattle/Tacoma Intl-DUB Dublin
18h 30m2 stops Kastrup Copenhagen Stockholm Arlanda
€497Scandinavian Airlines
Sat, 19 Sep - Sat, 26 Sep
Scandinavian Airlines Logo
19:05 - 13:45DUB  Dublin-SEA Seattle/Tacoma Intl
26h 40m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
15:55 - 18:20SEA  Seattle/Tacoma Intl-DUB Dublin
18h 25m1 stop Kastrup Copenhagen
€500Scandinavian Airlines
Fri, 6 Nov - Fri, 13 Nov
Icelandair Logo
11:30 - 17:00DUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
14:35 - 10:15SEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
€518Icelandair
Tue, 15 Dec - Sun, 27 Dec
British Airways Logo
08:50 - 16:50DUB  Dublin-SEA Seattle/Tacoma Intl
16h 00m1 stop London Heathrow
British Airways Logo
18:45 - 15:05SEA  Seattle/Tacoma Intl-DUB Dublin
12h 20m1 stop London Heathrow
€523British Airways
Thu, 17 Dec - Sun, 27 Dec
British Airways Logo
08:50 - 16:50DUB  Dublin-SEA Seattle/Tacoma Intl
16h 00m1 stop London Heathrow
British Airways Logo
18:45 - 15:05SEA  Seattle/Tacoma Intl-DUB Dublin
12h 20m1 stop London Heathrow
€523British Airways
Tue, 8 Sep - Wed, 30 Sep
Icelandair Logo
14:15 - 11:45DUB  Dublin-SEA Seattle/Tacoma Intl
29h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 11:05SEA  Seattle/Tacoma Intl-DUB Dublin
32h 05m1 stop Reykjavik Keflavik Intl
€527Icelandair
Fri, 6 Nov - Fri, 13 Nov
Aer Lingus Logo
16:30 - 18:20DUB  Dublin-SEA Seattle/Tacoma Intl
9h 50mdirect
Aer Lingus Logo
18:45 - 16:35SEA  Seattle/Tacoma Intl-DUB Dublin
13h 50m1 stop London Heathrow
€655Aer Lingus
Sun, 30 Aug - Tue, 15 Sep
Aer Lingus Logo
15:25 - 17:10DUB  Dublin-SEA Seattle/Tacoma Intl
9h 45mdirect
Aer Lingus Logo
19:10 - 12:15SEA  Seattle/Tacoma Intl-DUB Dublin
9h 05mdirect
€697Aer Lingus
Tue, 25 Aug - Sat, 5 Sep
Finnair Logo
09:30 - 23:59DUB  Dublin-PDX Portland
22h 29m1 stop Chicago O'Hare Intl
Finnair Logo
07:39 - 09:45PDX  Portland-DUB Dublin
18h 06m1 stop Dallas/Fort Worth
€729Finnair
Thu, 3 Sep - Sat, 19 Sep
Finnair Logo
09:30 - 23:59DUB  Dublin-PDX Portland
22h 29m1 stop Chicago O'Hare Intl
Finnair Logo
08:00 - 09:45PDX  Portland-DUB Dublin
17h 45m1 stop Dallas/Fort Worth
€729Finnair
Booking Insights

KAYAK's insights & trends for flights to Washington

Get data-powered insights and trends into flights to Washington to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Washington?

These are the best return prices found by users searching on KAYAK in the last 5 days.

The cheapest ticket to Washington from Ireland found in the last 5 days was to Seattle, at €692 return. The most popular route is Dublin (DUB) to Seattle (SEA) and the cheapest return ticket found on this route in the last 5 days was €692.

What is the cheapest month to fly from Ireland to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to Washington, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ireland to Washington is March, when tickets cost €520 (return) on average. On the other hand, the most expensive months are January and August, when the average cost of round-trip tickets is €728 and €661 respectively.

What is the cheapest time of day to fly to Washington?

The average price for all round-trip flights from Ireland to Washington depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Washington is generally in the evening, when retur flights cost €767 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Washington is generally in the evening, which is peak travel time and where the average cost of a ticket is €767.

How far in advance should I book a flight from Ireland to Washington?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Ireland to Washington, you should book around 2 weeks before departure, which saves you about 19% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

January

Cheapest flight

€360
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Dublin to Portland

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from Ireland to Washington?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ireland to Washington.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ireland to Washington?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ireland to Washington is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ireland to Washington?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Ireland to Washington with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ireland to Washington?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ireland to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Washington?

    Based on KAYAK data, the cheapest day to fly to Washington is Sunday when return tickets can be as cheap as €704. On the other hand, the most expensive day to fly is Thursday, when return prices are €954 on average.

Top tips for finding cheap flights to Washington

  • Looking for cheap airfare to Washington? 25% of our users found return tickets to Washington for the following prices or less: From Dublin €747
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington flight deals.

Reviews of the top 3 airlines flying to Washington

 
See real verified KAYAK customer reviews for airlines flying to Washington. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Washington. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ireland to Washington? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Aer LingusOverall score based on 1692 reviews
6.7Food
7.0Entertainment
7.4Boarding
8.1Crew
7.2Comfort
Airline reviews

Very comfortable flight. Great service, food options, and entertainment options. With Wi-Fi!

10.0 ExcellentAnonymous, Aug 2026
Read more Aer Lingus reviews

Very comfortable flight. Great service, food options, and entertainment options. With Wi-Fi!

On time departure and arrival at LAX - good inflight entertainment - all basic seats on every airline right now begin to feel small after 10 hours!!

I was pleasantly surprised. I've never flown this airline and the seats were comfy, I couldn't select my seat but luckily got aisle and was able to comfortably sleep the whole trip except when they came around with an in flight free meal, drinks then snack at the end. I'd fly with Aer Lingus again. The only annoying thing is you had to pay for WiFi for different hours of usage but luckily I didn't need it

This was a great flight. I love the way they had general boarding board from the back first by seat row and in general the flight was very comfortable. The seats were actually comfy, and the food served was surprisingly good.

A seat was broken There was a delay of 45min A checked bag was missing in Boston

The service was some of the worst I have experienced on an international flight. The service was rude, the quality of the food was very low. The speed of service was insanely quick. You couldn’t finish your pretzels before the meal came before the coffee came before trash collection came. Then they never came back for 5 hours. They rushed everything so they could get it over with.

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

How can the airline deploy the oldest 757-200 with a broken down entertainment system and no WiFi for a cross Atlantic 7:50 hr torture chamber experience?? My seat 3A couldn’t be reclined. The footrest was flimsy and useless. And there’s no leg support unlike their newer 737-Max which they lavish on intra-Europe routes. Shame!!

Only drinks included in economy class was water and coffee seat on the 737 were hard as rock. The landing and passport control in Iceland are the worst I have ever seen. 2 hours to clear customs ???? 3 attendants at pass port control out of more than a dozen closed. I” ll never fly to Iceland or transfer through this airport again.

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

One of the worst airlines I ever flew. Boarding is a disaster, they are always late, the planes are overly crowded. Everyone on my flight lost their connection because they were 2h late. Reykjavik is also not the best airport out there.

Flight was delayed. They did a terrible job rebooking me. Agent on the ground was useless. The partner airline who ran the plane was able to help me but Iceland air was useless

Flight delayed Delay to the gate upon arrival Baggage took more than an hour so we missed our connecting!!! Terrible experience!

ok. It's a short flight and it was delayed, hence the ok rating.

Crew members were thorough in checking seatbelts and whatnot which makes me feel cared for because passenger safety is a main concern.

Smooth flight. The seats were comfortable but the reclining mechanism didn't work very well. My wife's seat required the flight attendant to push the seat forward while she pushed the button. The leg support didn't want to return to its home under the seat. I ordered the diabetic meal which was full of carbs. It was low in sugar but carbs turn into sugar so was it really diabetic? Overall the flight was pleasant, long but pleasant.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

The crew was very nice and pleasant. We were very reluctant to book our flight with British Airlines because we had bad experience with their flight attendants on the previous trips, they were rude and not helpful.

Adequate to good experience. Comfort was mediocre but everything else was good..

Boarding was poor. Why are first class passengers not boarded first?! Bus to the plane and then held on a packed bus because we were waiting for people on the bus before to finish boarding. Seat belt on the fist clas seat is very uncomfortable, cutting into your neck. Other than that crew, seating and food were all excellent. Entertainment, as usual - rubbish.

Had a very bad experience flying out of London. Our initial flight was cancelled without notice and the next flight had a layover of 8 extra hours. Me, my husband and my 8-year-old were already sick, and this further added to our problems. We paid extra for the seats: I was not even given our chosen seats which we paid for months before the trip. We were shoved into the available seats which were middle ones in the back (we had paid for front window, aisle, aisle). The seats were so uncomfortable and getting out of middle seats every so often (with a sick child) was a task. We had initially chosen British Airways because of the short layover, however, that went out of the window. Although unexpected things happen all the time and I understand customers have to adjust for the unplanned, however, how the airlines react and make the passengers comfortable during that time is the real test. We were not given any compensation for food or any arrangement to stay comfortable during that time. In fact, our paid seats were taken away as well.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

Everything you need to know for your flight to Washington

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.