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$361+ Cheap flights from Seattle (SEA) to Basel (EAP)

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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — EAP
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Seattle to Basel

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Basel (EAP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Popular in

June

Cheapest in

November

Round-trip from

$534
(Expedia)

One-way from

$361
(Kiwi.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Basel (EAP) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Basel (EAP) flights.
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High demand for flights, 47% potential price rise
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Best time to find cheap flights, 34% potential price drop
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From Seattle/Tacoma Intl to Basel (EAP)
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One-way flight from Seattle/Tacoma Intl to Basel (EAP)
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Find flight deals from Seattle to Basel

Cheapest flights from Seattle to Basel
Explore the most affordable flight options available from Seattle to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Expedia deal was found by Cheapflights users on 11/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/36:50 pmSEA - BSL
1 stop18h 30mBritish Airways
Wed 12/116:15 amBSL - SEA
2 stops25h 06mBritish Airways
Deal found 11/19$534
This Delta deal was found by Cheapflights users on 11/19. 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.
Tue 12/31:35 pmSEA - BSL
1 stop15h 30mDelta
Wed 12/116:05 amBSL - SEA
1 stop14h 47mDelta
Deal found 11/19$537
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/35:00 pmSEA - BSL
2 stops20h 20mAmerican Airlines
Wed 12/116:15 amBSL - SEA
2 stops21h 50mAmerican Airlines
Deal found 11/19$539
This Air Canada deal was found by Cheapflights users on 11/20. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/45:45 amSEA - BSL
2 stops22h 25mMultiple Airlines
Wed 12/1111:05 amBSL - SEA
2 stops20h 05mMultiple Airlines
Deal found 11/20$596
This Air Canada deal was found by Cheapflights users on 11/20. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/76:00 amSEA - BSL
2 stops22h 25mAir Canada
Sun 1/122:10 pmBSL - SEA
3 stops28h 40mAir Canada
Deal found 11/20$858
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 11/293:10 pmSEA - BSL
1 stop19h 15mUnited Airlines
Tue 1/1411:00 amBSL - SEA
2 stops43h 30mUnited Airlines
Deal found 11/20$859
This KAYAK deal was found by Cheapflights users on 11/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/287:10 amSEA - BSL
2 stops29h 10mLufthansa
Tue 1/149:35 amBSL - SEA
1 stop12h 45mLufthansa
Deal found 11/20$876
This Air France deal was found by Cheapflights users on 11/20. 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.
Sat 11/301:35 pmSEA - BSL
1 stop15h 30mAir France
Mon 1/136:05 amBSL - SEA
2 stops19h 35mAir France
Deal found 11/20$895
This Turkish Airlines deal was found by Cheapflights users on 11/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/17:00 pmSEA - BSL
1 stop30h 05mTurkish Airlines
Mon 1/136:05 pmBSL - SEA
1 stop32h 00mTurkish Airlines
Deal found 11/20$912
This KLM deal was found by Cheapflights users on 11/20. 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.
Sat 11/302:05 pmSEA - BSL
2 stops15h 00mKLM
Tue 1/146:05 amBSL - SEA
2 stops18h 49mKLM
Deal found 11/20$926

Find flights from Seattle to Basel within your budget

Customize your flight search to find flights from Seattle 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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 2/26

7:00 am-6:40 pm

2 stops26h 40m

Basel EuroAirport Swiss

Mon 3/3

8:00 pm-11:20 am

1 stop24h 20m

$530

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 2/26

6:50 pm-10:05 pm

1 stop18h 15m

Basel EuroAirport Swiss

Mon 3/3

3:50 pm-11:20 am

1 stop28h 30m

$533

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 12/3

6:50 pm-10:20 pm

1 stop18h 30m

Basel EuroAirport Swiss

Wed 12/11

6:15 am-10:21 pm

2 stops25h 06m

$534

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 12/3

1:35 pm-2:05 pm

1 stop15h 30m

Basel EuroAirport Swiss

Wed 12/11

6:05 am-11:52 am

1 stop14h 47m

$537

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Thu 1/9

6:05 am-1:10 pm

2 stops22h 05m

Basel EuroAirport Swiss

Fri 1/17

11:10 am-10:00 pm

3 stops19h 50m

$560

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Thu 1/9

2:00 pm-1:10 pm

1 stop14h 10m

Basel EuroAirport Swiss

Fri 1/17

11:10 am-9:30 pm

2 stops43h 20m

$562

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Thu 1/9

2:00 pm-6:10 pm

1 stop19h 10m

Basel EuroAirport Swiss

Fri 1/17

9:35 am-1:20 pm

1 stop12h 45m

$569

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sun 12/1

7:00 pm-10:05 am

1 stop30h 05m

Basel EuroAirport Swiss

Mon 1/13

6:05 pm-5:05 pm

1 stop32h 00m

$912

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sat 11/30

9:35 pm-12:05 pm

3 stops53h 30m

$361

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sat 11/30

1:35 pm-2:05 pm

1 stop15h 30m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 14 results
1
2
  • Most accurate provider: When it comes to deals on Seattle-Basel flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Basel flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seattle-Basel flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Basel flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Basel flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Basel

Have a flexible travel schedule? Discover the best time to fly to Basel from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Basel

Get recent, data-driven insights about flights from Seattle to Basel including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to Basel?

Currently, January is the cheapest month in which you can book a flight from Seattle to Basel (average of $545). Flying from Seattle to Basel 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 SEA to EAP?

Find hourly flight availability from Seattle 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 November 21, 2024.

Unlike at noon, when flights are generally more expensive, you can save up to 7% on flights from Seattle to Basel by exploring options for tickets in the morning.

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 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 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, 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 November 21, 2024.
Read reviews from past customers who have flown Lufthansa, United Airlines and British Airways from Seattle to Basel. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,758 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,525 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Turkish Airlines
7.4
Good
3,914 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
9,172 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Basel. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Seattle to Basel round-trip?

    Our cheapest airline available from Seattle to Basel is British Airways. Our recent data shows that you can find tickets from as low as $534 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $537 and $539 round-trip. British Airways is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Basel one-way?

    One-way options have recently been found by users for as low as $397 on Delta. Other airlines that offer cheap prices include British Airways from $411 and United Airlines from $453 one-way.

  • Can I find deals for flights from Seattle to Basel that include hotel bookings?

    Yes. In addition to deals on Seattle to Basel flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Basel?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Basel.

  • Can I find deals for business class flights from Seattle to Basel?

    Yes. Cheapflights offers flight deals from Seattle to Basel by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Basel?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Basel (average of $545). Flying from Seattle to Basel 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Seattle to Basel

Discover the top 2 airlines that operate flights from Seattle 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$443Average$685FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$502Average$769FlexibilityNo cancel feeOn-time77%
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