$166 Find Cheap Flights from Washington to Europe

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Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$166
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 35% increase in price.
Flight from Seattle to Dublin

Flights from Washington to Europe: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Washington to Europe 
KeithFlew with IcelandairSEA-KEFJun 2025
The boarding was good but the line for check-in is pushed off to the side because of the recent construction. It’s fine but cramped as people jostle to get checked in. Also, we weren’t able to use our online check in and printed boarding pass so we had to basically check in twice.
Verified travelerFlew with British AirwaysSEA-LHRApr 2025
Make sure you have plenty of time between flights if you are delayed.
Verified travelerFlew with LufthansaSEA-FRAApr 2024
If you don't have checked luggage, no need to be in a rush to line up. There will be a spot for your little carry-on rollie bag, so relax until the line is down to board the plane.
Verified travelerFlew with British AirwaysSEA-LHRApr 2024
Bring a sack lunch -- airport food was very expensive.

FAQs for booking flights from Washington to Europe

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

    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 Washington to Europe.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington to Europe 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 Washington to Europe?

    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 Washington to Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Europe?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Europe is London Heathrow Airport (LHR), with an average flight price of $518.

  • What is the cheapest day to fly to Europe?

    Based on KAYAK data, the cheapest day to fly to Europe is Tuesday where round-trip tickets can be as cheap as $819. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $950 on average.

  • What is the cheapest time of day to fly to Europe?

    The cheapest time of day to fly to Europe is generally at night, when round-trip flights cost $862 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Europe is generally in the morning, which is peak travel time and where the average cost of a ticket is $980.

  • What is the cheapest flight to Europe?

    The cheapest ticket to Europe from Washington found in the last 72 hours was to Copenhagen, at $475 round-trip. The most popular route is Seattle (SEA) to London Heathrow Airport (LHR) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $537.

  • What is the cheapest month to fly from Washington to Europe?

    The cheapest month for flights from Washington to Europe is November, when tickets cost $716 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,346 and $1,164 respectively.

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

    To get a below average price on the flight from Washington to Europe, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

  • How long is the flight to Europe?

    An average nonstop flight from Washington to Europe takes 12h 38m, covering a distance of 5106 miles. The shortest route is Seattle (SEA) to Reykjavik Keflavik Intl Airport (KEF) with an average flight time of 7h 25m.

  • What are the most popular destinations in Europe?

    Based on KAYAK flight searches, the most popular destination is London (28% of total searches to Europe). The next most popular destinations are Paris (12%) and Istanbul (10%). Searches for flights to Dublin (7%), to Rome (5%) and to Amsterdam (4%) are also popular.

Book cheap flights from Washington to Europe

Recent round-trip flight deals

11/12Wed
nonstopAer Lingus
9h 05mSEA-DUB
11/26Wed
nonstopAer Lingus
9h 50mDUB-SEA
$303
8/10Sun
nonstopAer Lingus
9h 00mSEA-DUB
8/20Wed
nonstopAer Lingus
9h 40mDUB-SEA
$307
10/27Mon
2 stopsAir Canada
27h 10mSEA-DUB
11/5Wed
1 stopAir Canada
20h 56mDUB-SEA
$325
8/9Sat
1 stopUnited Airlines
27h 00mSEA-DUB
8/22Fri
1 stopUnited Airlines
32h 01mDUB-SEA
$334
11/12Wed
2 stopsUnited Airlines
16h 55mSEA-DUB
11/26Wed
2 stopsUnited Airlines
34h 40mDUB-SEA
$335
8/10Sun
2 stopsLufthansa
32h 50mSEA-DUB
8/19Tue
2 stopsLufthansa
36h 56mDUB-SEA
$341
10/24Fri
1 stopIcelandair
13h 30mSEA-DUB
11/9Sun
1 stopIcelandair
13h 30mDUB-SEA
$351
10/4Sat
1 stopIcelandair
11h 20mSEA-DUB
10/15Wed
1 stopIcelandair
13h 35mDUB-SEA
$353
10/13Mon
1 stopAir Canada
17h 00mSEA-FCO
11/7Fri
2 stopsAir Canada
53h 16mFCO-SEA
$492
11/3Mon
2 stopsLufthansa
34h 20mSEA-ATH
11/11Tue
2 stopsLufthansa
30h 21mATH-SEA
$580

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Recent one-way flight deals

10/15Wed
1 stopIcelandair
13h 30mSEA-DUB
$166
10/15Wed
1 stopIcelandair
13h 30mSEA-DUB
$167
7/23Wed
2 stops
33h 25mSEA-LGW
$208
9/30Tue
2 stops
20h 30mSEA-LGW
$224
7/8Tue
2 stopsAir Canada
32h 50mSEA-DUB
$244
7/14Mon
2 stopsUnited Airlines
22h 50mSEA-DUB
$245
10/1Wed
1 stopUnited Airlines
15h 15mSEA-DUB
$249
7/15Tue
2 stopsAir Canada
18h 45mSEA-DUB
$251
9/24Wed
1 stopLufthansa
14h 05mSEA-DUB
$267
9/23Tue
1 stopLufthansa
13h 05mSEA-DUB
$270

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Last minute flights from Washington to Europe

Last minute flight, train and bus deals

7/7Mon
multi-stopDelta
20h 05mSEA-DUB
7/17Thu
multi-stopDelta
19h 56mDUB-SEA
$498
7/7Mon
multi-stopDelta
14h 50mSEA-DUB
7/17Thu
multi-stopDelta
16h 15mDUB-SEA
$506
7/7Mon
multi-stopKLM
14h 50mSEA-DUB
7/18Fri
multi-stopKLM
13h 40mDUB-SEA
$508
7/6Sun
multi-stopSWISS
20h 05mSEA-DUB
8/18Mon
multi-stopSWISS
31h 56mDUB-SEA
$531
7/7Mon
multi-stopAir Canada
16h 25mSEA-DUB
7/15Tue
multi-stopAir Canada
19h 21mDUB-SEA
$537
7/6Sun
multi-stopUnited Airlines
23h 55mSEA-DUB
7/17Thu
multi-stopUnited Airlines
24h 06mDUB-SEA
$554
7/6Sun
multi-stopUnited Airlines
16h 25mSEA-DUB
8/18Mon
multi-stopUnited Airlines
19h 21mDUB-SEA
$557
7/7Mon
multi-stopAir Canada
28h 30mSEA-DUB
7/15Tue
multi-stopAir Canada
19h 21mDUB-SEA
$562
7/7Mon
multi-stopSWISS
17h 25mSEA-DUB
7/17Thu
multi-stopSWISS
31h 56mDUB-SEA
$611
7/6Sun
multi-stopKLM
14h 40mSEA-LHR
7/22Tue
multi-stopKLM
17h 20mLHR-SEA
$642

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Everything you need to know for your flight to Europe

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.

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