$282+ Cheap flights from Washington to Basel EuroAirport Swiss (BSL)
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Washington to Basel 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 Washington to Basel
Keep the following information in mind while searching for Washington to Basel flight deals. Data was last updated June 18, 2025.
Round-trip from | $484 (British Airways) |
|---|---|
One-way from | $282 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $857 |
Find flight deals from Washington to Basel
Cheapest flights from Washington to BaselExplore the most affordable flight options available from Washington to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
Explore the most affordable flight options available from Washington to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
This Lufthansa deal was found by Cheapflights users on 6/16. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Priceline deal was found by Cheapflights users on 6/18. 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 Priceline 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 6/16. 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 Orbitz deal was found by Cheapflights users on 6/16. 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 Orbitz 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 6/17. 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.
This Austrian Airlines deal was found by Cheapflights users on 6/16. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ovago deal was found by Cheapflights users on 6/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Booking.com deal was found by Cheapflights users on 6/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air France deal was found by Cheapflights users on 6/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines 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 Washington to Basel 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 June 18, 2025.
Use the filters below to find and compare flights from Washington to Basel EuroAirport Swiss that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Mon 9/1
3:43 pm-10:50 pm
2 stops22h 07m
Basel EuroAirport Swiss
Mon 9/15
7:20 pm-11:10 am
1 stop24h 50m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Tue 9/9
8:20 pm-10:50 pm
1 stop17h 30m
Basel EuroAirport Swiss
Wed 9/24
6:40 am-11:35 am
1 stop13h 55m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Sun 9/7
2:20 pm-1:40 pm
1 stop14h 20m
Basel EuroAirport Swiss
Wed 9/24
6:05 am-2:16 pm
2 stops17h 11m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Mon 9/1
7:20 am-12:25 pm
2 stops20h 05m
Basel EuroAirport Swiss
Mon 9/15
11:30 am-2:16 pm
2 stops35h 46m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Mon 9/1
5:07 am-7:35 pm
2 stops29h 28m
Basel EuroAirport Swiss
Mon 9/15
11:30 am-2:16 pm
2 stops35h 46m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Wed 7/30
6:30 pm-9:30 am
1 stop30h 00m
Basel EuroAirport Swiss
Tue 8/12
10:10 am-11:15 am
1 stop34h 05m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Tue 7/29
1:50 pm-9:40 pm
1 stop22h 50m
Basel EuroAirport Swiss
Tue 8/12
6:25 pm-11:35 am
1 stop26h 10m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Mon 9/1
4:25 pm-7:35 pm
2 stops18h 10m
Basel EuroAirport Swiss
Mon 9/15
8:25 am-6:36 pm
2 stops19h 11m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Wed 8/27
8:00 am-7:45 pm
2 stops26h 45m
Basel EuroAirport Swiss
Sat 9/13
10:20 am-8:42 pm
2 stops43h 22m
SeattleBasel
SEA - BSL
SEABSL
Seattle/Tacoma Intl
Thu 7/31
1:30 pm-1:10 pm
1 stop14h 40m
Basel EuroAirport Swiss
Sun 8/10
6:15 am-3:55 pm
1 stop18h 40m
Best time to book a flight from Washington to Basel
Have a flexible travel schedule? Discover the best time to fly to Basel from Washington with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington to Basel EuroAirport Swiss
What is the cheapest month to book a flight from State of Washington to Basel EuroAirport Swiss?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Basel EuroAirport Swiss (average of $545). Flying from State of Washington to Basel EuroAirport Swiss in June is currently the most expensive (average of $1,132). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from WA to BSL?
Find hourly flight availability from Washington to Basel. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Basel EuroAirport Swiss as you normally would.
Rainfall in Basel by month
Plan your trip to Basel by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Basel EuroAirport Swiss ranges from 1.9 - 3.4 inches per month. June is typically the wettest month, when rainfall can reach 3.4 in. February is typically the driest time to visit Basel EuroAirport Swiss when rainfall is around 1.9 in.
Temperature in Basel by month
Plan your trip to Basel by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Basel EuroAirport Swiss, 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 January, when temperatures are typically at their lowest (around 33.8 F).
Reviews of airlines servicing Basel
Get insights into the airlines that provide service to Basel. 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 Basel. Reviews last updated June 18, 2025.
Get a feel of what it's like to fly with Delta, KLM and Austrian Airlines from Washington to Basel by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Boarding
Food
Overall
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Crew
Boarding
Food
Overall
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Crew
Boarding
Food
Overall
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Crew
Boarding
Food
Overall
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Crew
Boarding
Food
Overall
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Crew
Boarding
Food
Overall
Entertainment
Comfort
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Washington to Basel. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Washington to Basel
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Washington to Basel
Discover the top 2 airlines that operate flights from Washington to Basel. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$443 | Average$694 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$571 | Average$649 | FlexibilityNo cancel fee | On-time76% |