$549+ Cheap flights from Belfast to Washington
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Belfast to Washington with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Belfast to Washington
Keep the following information in mind while searching for Belfast to Washington flight deals. Data was last updated junio 12, 2025.
Round-trip from | $1,079 (Mytrip) |
|---|---|
One-way from | $549 (Kiwi.com) |
Popular in | July |
Cheapest in | May |
Average price | $954 |
Find flight deals from Belfast to Washington
Cheapest flights from Belfast to WashingtonExplore the most affordable flight options available from Belfast to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
Explore the most affordable flight options available from Belfast to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
This British Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This TravelUp deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gurufare deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Belfast to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Belfast to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastSeattle
BFS - SEA
BFSSEA
Belfast Intl
mar. 7/1
5:55 am-6:38 pm
3 stops44h 43m
Seattle/Tacoma Intl
mar. 7/8
3:45 pm-9:20 pm
3 stops21h 35m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
vie. 7/25
5:25 pm-3:50 pm
1 stop30h 25m
Seattle/Tacoma Intl
vie. 8/1
5:40 pm-9:15 pm
1 stop19h 35m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
vie. 7/25
6:35 am-6:20 pm
1 stop19h 45m
Seattle/Tacoma Intl
vie. 8/1
6:18 am-9:25 am
2 stops19h 07m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
dom. 6/22
7:00 am-5:50 pm
2 stops18h 50m
Seattle/Tacoma Intl
jue. 6/26
7:35 pm-8:55 pm
2 stops17h 20m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
vie. 7/25
6:50 pm-9:21 am
3 stops46h 31m
Seattle/Tacoma Intl
vie. 8/1
3:45 pm-9:15 pm
3 stops21h 30m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
dom. 6/22
8:30 am-7:00 pm
2 stops18h 30m
Seattle/Tacoma Intl
jue. 6/26
5:35 pm-9:15 pm
1 stop19h 40m
BelfastSeattle
BFS - SEA
BFSSEA
Belfast Intl
jue. 6/26
6:00 am-2:11 pm
3 stops40h 11m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
jue. 6/26
10:20 am-1:50 pm
3 stops35h 30m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
mié. 6/25
6:50 pm-5:50 pm
2 stops31h 00m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
mié. 6/25
6:50 am-11:35 am
1 stop12h 45m
Best time to book a flight from Belfast to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Belfast with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Belfast to Washington
Rainfall in Washington by month
Plan your trip to Washington by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.
Temperature in Washington by month
Plan your trip to Washington by taking into account the average temperature totals by month.
If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).
Reviews of airlines servicing Washington
Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated junio 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Aer Lingus from Belfast to Washington. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC