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 $527 on this airline. Additional options worth looking into are American Airlines and Air France, starting at $536 and $551 round-trip. British Airways is 34% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from Seattle to Basel?

Travelers seeking maximum savings on their Seattle to Basel flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Seattle to Basel?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest month to fly from Seattle to Basel?

Our data shows that March tends to be the cheapest month to fly to Basel from Seattle. Users have commonly found prices around $807 for the month, but tickets can be as low as $421. Due to multiple factors, prepare for potentially higher prices in June.

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.

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.

$446+ Flights from Seattle to Basel

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Cheap flight deals from Seattle to Basel

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$527 (Flightnetwork)
Popular in	June
Cheapest in	March
Average price	$661

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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From Seattle/Tacoma Intl to Basel (EAP)

Search Deals

High demand for flights, 36% potential price rise

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Best time to find cheap flights, 8% potential price drop

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Average for round-trip flights in December 2024

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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 December 22, 2024.

Wed 12/257:00 pmSEA - BSL

1 stop30h 05mTurkish Airlines

Wed 1/86:05 pmBSL - SEA

2 stops31h 11mTurkish Airlines

Deal found 12/21

$4,471

Wed 12/258:20 amSEA - BSL

3 stops23h 00mUnited Airlines

Wed 1/89:35 amBSL - SEA

2 stops20h 55mUnited Airlines

Deal found 12/21

$7,974

Best flights from Seattle to Basel
Discover carefully curated flight deals from Seattle to Basel that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 22, 2024.

Tue 2/41:35 pmSEA - BSL

1 stop23h 45mBritish Airways

Tue 2/116:55 amBSL - SEA

1 stop19h 00mBritish Airways

Deal found 12/21

$527

Tue 2/45:45 amSEA - BSL

2 stops28h 40mMultiple Airlines

Tue 2/116:50 amBSL - SEA

2 stops24h 17mMultiple Airlines

Deal found 12/21

$530

Tue 2/42:19 pmSEA - BSL

2 stops19h 01mAmerican Airlines

Tue 2/116:55 amBSL - SEA

1 stop19h 00mAmerican Airlines

Deal found 12/21

$536

Wed 2/57:10 amSEA - BSL

2 stops17h 25mAir France

Wed 2/126:05 amBSL - SEA

2 stops19h 49mAir France

Deal found 12/21

$551

Mon 2/33:05 pmSEA - BSL

2 stops37h 20mAir Canada

Mon 2/1010:55 amBSL - SEA

2 stops56h 02mAir Canada

Deal found 12/21

$566

Wed 2/59:20 amSEA - BSL

2 stops22h 00mUnited Airlines

Wed 2/127:10 amBSL - SEA

2 stops23h 20mUnited Airlines

Deal found 12/22

$571

Sat 1/183:05 pmSEA - BSL

2 stops43h 25mLufthansa

Thu 1/304:55 pmBSL - SEA

1 stop29h 25mLufthansa

Deal found 12/20

$592

Tue 2/48:00 amSEA - BSL

2 stops40h 30mAustrian Airlines

Tue 2/118:25 pmBSL - SEA

2 stops35h 28mAustrian Airlines

Deal found 12/20

$872

Wed 12/257:00 pmSEA - BSL

1 stop30h 05mTurkish Airlines

Wed 1/86:05 pmBSL - SEA

2 stops31h 11mTurkish Airlines

Deal found 12/21

$4,471

Last-minute flights from Seattle to Basel
Discover last-minute flight deals from Seattle to Basel. Data last updated December 22, 2024 and is based on user searches.

Wed 12/257:00 pmSEA - BSL

1 stop30h 05mTurkish Airlines

Wed 1/86:05 pmBSL - SEA

2 stops31h 11mTurkish Airlines

Deal found 12/21

$4,471

Mon 1/136:05 amSEA - BSL

2 stops22h 25mMultiple Airlines

Mon 1/206:50 pmBSL - SEA

2 stops32h 40mMultiple Airlines

Deal found 12/20

$597

Mon 1/136:05 amSEA - BSL

2 stops19h 20mAir Canada

Mon 1/202:10 pmBSL - SEA

2 stops40h 50mAir Canada

Deal found 12/21

$600

Sat 1/183:05 pmSEA - BSL

2 stops43h 25mLufthansa

Thu 1/304:55 pmBSL - SEA

1 stop29h 25mLufthansa

Deal found 12/20

$592

Sun 1/196:50 pmSEA - BSL

1 stop15h 10mBritish Airways

Tue 2/46:55 amBSL - SEA

1 stop13h 25mBritish Airways

Deal found 12/21

$528

Sun 1/191:43 pmSEA - BSL

2 stops20h 17mAmerican Airlines

Tue 2/46:55 amBSL - SEA

1 stop13h 25mAmerican Airlines

Deal found 12/21

$539

Wed 1/2211:05 amSEA - BSL

2 stops20h 15mUnited Airlines

Wed 1/299:35 amBSL - SEA

2 stops20h 55mUnited Airlines

Deal found 12/21

$583

Find flights from Seattle to Basel within your budget

Fly from

Fly to

Route

Depart

Return

Price

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 2/4

1:35 pm-10:20 pm

1 stop23h 45m

Basel EuroAirport Swiss

Tue 2/11

6:55 am-4:55 pm

1 stop19h 00m

$527

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 2/4

5:45 am-7:25 pm

2 stops28h 40m

Basel EuroAirport Swiss

Tue 2/11

6:50 am-10:07 pm

2 stops24h 17m

$530

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 2/4

2:19 pm-6:20 pm

2 stops19h 01m

Basel EuroAirport Swiss

Tue 2/11

6:55 am-4:55 pm

1 stop19h 00m

$536

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 2/5

7:10 am-9:35 am

2 stops17h 25m

Basel EuroAirport Swiss

Wed 2/12

6:05 am-4:54 pm

2 stops19h 49m

$551

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Mon 2/3

3:05 pm-1:25 pm

2 stops37h 20m

Basel EuroAirport Swiss

Mon 2/10

10:55 am-9:57 am

2 stops56h 02m

$566

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 2/5

11:05 am-4:20 pm

2 stops20h 15m

Basel EuroAirport Swiss

Wed 2/12

7:10 am-9:30 pm

2 stops23h 20m

$571

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sat 1/18

3:05 pm-7:30 pm

2 stops43h 25m

Basel EuroAirport Swiss

Thu 1/30

4:55 pm-1:20 pm

1 stop29h 25m

$592

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sun 6/1

5:35 pm-5:50 pm

1 stop15h 15m

Basel EuroAirport Swiss

Fri 8/29

10:15 am-5:40 pm

1 stop16h 25m

$764

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 2/4

8:00 am-9:30 am

2 stops40h 30m

Basel EuroAirport Swiss

Tue 2/11

8:25 pm-10:53 pm

2 stops35h 28m

$872

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 6/4

1:30 pm-1:10 pm

1 stop14h 40m

$446

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 17 results

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?

Unlike in the evening, when flights are generally more expensive, you can save up to 5% on flights from Seattle to Basel by exploring options for tickets in the morning.

Rainfall in Basel 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

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

Austrian Airlines

7.6

Good

785 reviews

Reviews

1 / 10

We are paying 200-300 Eur per flight, it is outrageous they don't offer water for free.

Austrian Airlines

7.6

Good

785 reviews

Austrian Airlines

7.6

Good

785 reviews

Reviews

1 / 10

We are paying 200-300 Eur per flight, it is outrageous they don't offer water for free.

Air France

7.4

Good

1,501 reviews

Austrian Airlines

7.6

Good

785 reviews

Reviews

1 / 10

We are paying 200-300 Eur per flight, it is outrageous they don't offer water for free.

United Airlines

7.4

Good

9,028 reviews

Austrian Airlines

7.6

Good

785 reviews

Reviews

1 / 10

We are paying 200-300 Eur per flight, it is outrageous they don't offer water for free.

Turkish Airlines

7.3

Good

3,900 reviews

Austrian Airlines

7.6

Good

785 reviews

Reviews

1 / 10

We are paying 200-300 Eur per flight, it is outrageous they don't offer water for free.

American Airlines

7.2

Good

10,000 reviews

Austrian Airlines

7.6

Good

785 reviews

Reviews

1 / 10

We are paying 200-300 Eur per flight, it is outrageous they don't offer water for free.

Related info for your journey

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 $527 on this airline. Additional options worth looking into are American Airlines and Air France, starting at $536 and $551 round-trip. British Airways is 34% cheaper than the average price of flights available within the next 90 days to this destination.
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

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Top 2 airlines flying from Seattle to Basel

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$443	Average$624	FlexibilityNo cancel fee	On-time70%
Air France	Cheapest$502	Average$769	FlexibilityNo cancel fee	On-time77%

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$446+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Basel with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Basel

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Basel

Cheapest flights from Seattle to BaselExplore 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 December 22, 2024.

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 December 22, 2024.

Find flights from Seattle to Basel within your budget

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.

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?

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 December 22, 2024.

Rainfall in Basel by month

Plan your trip to Basel by taking into account the average rainfall totals by month.

Temperature in Basel by month

Plan your trip to Basel by taking into account the average temperature totals by month.

Reviews of airlines servicing Basel

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?

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

How can I find direct flights from Seattle to Basel?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Basel

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Seattle to Basel

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Book with Flexibility

Travel Smart

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 December 22, 2024.