Cheap flights from Seattle (SEA) to Basel (EAP) from $319

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 4/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — EAP
Mar 24 — Mar 311

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 March 19, 2024.

Popular in

January

Cheapest in

February

Average price

$831

Round-trip from

$555
High demand for flights, 58% potential price rise
Best time to find cheap flights, 45% potential price drop
Average for round-trip flights in March 2024
From Seattle/Tacoma Intl to Basel (EAP)

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 February tends to be the cheapest month to fly to Basel from Seattle. Users have commonly found prices around $1,252 for the month, but tickets can be as low as $683. Due to multiple factors, prepare for potentially higher prices in January.

When is the cheapest time to fly from Seattle to Basel (SEA - EAP)?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 28% on flights from Seattle to Basel by exploring options for tickets in the evening.

Cheap Lufthansa flights from Seattle to Basel

Explore cheap flight options specifically provided by Lufthansa for the route between Seattle and Basel. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Consider these cheap Lufthansa flights we've found departing from Seattle to Basel. Be sure to come back soon if the deals available don't appeal to you at this time.
Wed 4/173:20 pmSEA - BSL
2 stops19h 05mLufthansa
Wed 4/248:30 amBSL - SEA
2 stops19h 15mLufthansa
Deal found 3/18$576
Thu 4/182:15 pmSEA - BSL
1 stop22h 45mLufthansa
Sun 4/218:00 pmBSL - SEA
2 stops35h 45mLufthansa
Deal found 3/18$702
Tue 9/36:50 pmSEA - BSL
1 stop15h 45mLufthansa
Fri 9/209:40 amBSL - SEA
1 stop16h 19mLufthansa
Deal found 3/19$714
Tue 9/36:50 pmSEA - BSL
1 stop15h 45mLufthansa
Fri 9/201:30 pmBSL - SEA
1 stop12h 29mLufthansa
Deal found 3/18$717
Tue 9/36:50 pmSEA - BSL
1 stop15h 45mLufthansa
Fri 9/208:35 amBSL - SEA
2 stops17h 24mLufthansa
Deal found 3/18$745
Fri 8/232:15 pmSEA - BSL
1 stop18h 25mLufthansa
Wed 8/288:30 amBSL - SEA
2 stops20h 38mLufthansa
Deal found 3/18$799
Fri 8/232:15 pmSEA - BSL
1 stop18h 25mLufthansa
Wed 8/286:20 pmBSL - SEA
1 stop26h 55mLufthansa
Deal found 3/18$887
Fri 8/231:10 pmSEA - BSL
2 stops19h 30mLufthansa
Wed 8/288:30 amBSL - SEA
2 stops20h 38mLufthansa
Deal found 3/18$903
Tue 9/32:07 pmSEA - BSL
2 stops20h 28mLufthansa
Wed 9/188:10 pmBSL - SEA
2 stops31h 42mLufthansa
Deal found 3/18$1,715

Cheap American Airlines flights from Seattle to Basel

Explore cheap flight options specifically provided by American Airlines for the route between Seattle and Basel. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Take a gander at the lowest prices we've found on American Airlines flights from Seattle to Basel. Deals frequently update to provide users with more options.
Sun 4/281:32 pmSEA - BSL
2 stops24h 23mAmerican Airlines
Tue 5/76:40 amBSL - SEA
2 stops25h 01mAmerican Airlines
Deal found 3/18$584
Thu 8/2212:59 amSEA - BSL
2 stops36h 56mAmerican Airlines
Wed 8/286:35 amBSL - SEA
2 stops25h 10mAmerican Airlines
Deal found 3/18$1,792
Thu 8/2212:59 amSEA - BSL
2 stops36h 56mAmerican Airlines
Wed 8/286:35 amBSL - SEA
2 stops23h 36mAmerican Airlines
Deal found 3/19$1,801
Thu 8/2212:59 amSEA - BSL
2 stops25h 11mAmerican Airlines
Wed 8/286:35 amBSL - SEA
1 stop20h 10mAmerican Airlines
Deal found 3/19$1,882
Thu 8/2212:59 amSEA - BSL
2 stops25h 11mAmerican Airlines
Wed 8/286:35 amBSL - SEA
1 stop20h 10mAmerican Airlines
Deal found 3/18$1,883
Mon 9/212:59 amSEA - BSL
2 stops36h 56mAmerican Airlines
Wed 9/186:35 amBSL - SEA
1 stop14h 00mAmerican Airlines
Deal found 3/18$2,114
Mon 9/212:59 amSEA - BSL
2 stops36h 56mAmerican Airlines
Wed 9/186:35 amBSL - SEA
2 stops23h 38mAmerican Airlines
Deal found 3/18$2,138

Cheap Seattle to Basel flights in March & April 2024

Find cheap flight options from Seattle to Basel specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Prices were last updated on March 19, 2024.
These are some of the most attractive deals on flights from Seattle to Basel in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Sun 4/287:40 pmSEA - BSL
1 stop13h 35mBritish Airways
Tue 5/76:40 amBSL - SEA
1 stop13h 55mBritish Airways
Deal found 3/18$571
Wed 4/173:20 pmSEA - BSL
2 stops19h 05mLufthansa
Wed 4/248:30 amBSL - SEA
2 stops19h 15mLufthansa
Deal found 3/18$576
Wed 4/172:15 pmSEA - BSL
1 stop14h 25mMultiple Airlines
Wed 4/242:15 pmBSL - SEA
1 stop31h 10mMultiple Airlines
Deal found 3/18$583
Sun 4/281:32 pmSEA - BSL
2 stops24h 23mAmerican Airlines
Tue 5/76:40 amBSL - SEA
2 stops25h 01mAmerican Airlines
Deal found 3/18$584
Wed 4/241:32 pmSEA - BSL
2 stops24h 13mAmerican Airlines
Wed 5/156:35 amBSL - SEA
2 stops24h 22mAmerican Airlines
Deal found 3/17$586
Wed 4/246:38 amSEA - BSL
3 stops21h 17mUnited Airlines
Wed 5/156:40 amBSL - SEA
2 stops21h 05mUnited Airlines
Deal found 3/17$610
Sun 4/286:38 amSEA - BSL
3 stops26h 02mMultiple Airlines
Tue 5/76:40 amBSL - SEA
2 stops24h 47mMultiple Airlines
Deal found 3/18$611
Wed 4/241:30 pmSEA - BSL
1 stop23h 10mKLM
Wed 5/156:15 amBSL - SEA
1 stop13h 00mKLM
Deal found 3/17$615
Wed 4/1710:49 amSEA - BSL
3 stops21h 51mMultiple Airlines
Wed 4/242:15 pmBSL - SEA
2 stops19h 43mMultiple Airlines
Deal found 3/18$656

Seattle to Basel 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Basel in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
These are some of the most attractive deals on flights from Seattle to Basel in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Wed 10/307:45 pmSEA - BSL
1 stop18h 15mAmerican Airlines
Tue 11/127:00 amBSL - SEA
1 stop13h 25mAmerican Airlines
Deal found 3/18$555
Wed 10/301:39 pmSEA - BSL
2 stops24h 21mAmerican Airlines
Tue 11/123:40 pmBSL - SEA
1 stop34h 05mAmerican Airlines
Deal found 3/18$560
Wed 10/309:55 amSEA - BSL
2 stops16h 25mMultiple Airlines
Tue 11/126:45 amBSL - SEA
2 stops24h 11mMultiple Airlines
Deal found 3/18$564
Sun 4/287:40 pmSEA - BSL
1 stop13h 35mBritish Airways
Tue 5/76:40 amBSL - SEA
1 stop13h 55mBritish Airways
Deal found 3/18$571
Wed 4/173:20 pmSEA - BSL
2 stops19h 05mLufthansa
Wed 4/248:30 amBSL - SEA
2 stops19h 15mLufthansa
Deal found 3/18$576
Wed 4/172:15 pmSEA - BSL
1 stop14h 25mMultiple Airlines
Wed 4/242:15 pmBSL - SEA
1 stop31h 10mMultiple Airlines
Deal found 3/18$583
Sun 4/281:32 pmSEA - BSL
2 stops24h 23mAmerican Airlines
Tue 5/76:40 amBSL - SEA
2 stops25h 01mAmerican Airlines
Deal found 3/18$584
Wed 10/306:30 amSEA - BSL
3 stops28h 55mUnited Airlines
Tue 11/129:35 amBSL - SEA
2 stops20h 33mUnited Airlines
Deal found 3/18$586
Sun 4/286:38 amSEA - BSL
3 stops26h 02mMultiple Airlines
Tue 5/76:40 amBSL - SEA
2 stops24h 47mMultiple Airlines
Deal found 3/18$611

One-way flights to Basel from Seattle

Search for one-way flight options from Seattle to Basel. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Users traveling one-way from Seattle to Basel can select one of these great deals. Users in need of a round-trip flight from Seattle to Basel instead should update the search form at the top of page.
Wed 4/175:45 pmSEA - BSL
3 stops54h 55mMultiple Airlines
Deal found 3/18$319
Wed 4/177:40 pmSEA - BSL
1 stop18h 05mMultiple Airlines
Deal found 3/18$484
Tue 5/145:05 pmSEA - BSL
2 stops33h 00mMultiple Airlines
Deal found 3/18$545
Wed 5/19:19 pmSEA - BSL
3 stops51h 21mMultiple Airlines
Deal found 3/18$555
Thu 4/256:10 pmSEA - BSL
1 stop14h 45mDelta
Deal found 3/18$559
Tue 5/145:05 pmSEA - BSL
3 stops30h 50mMultiple Airlines
Deal found 3/18$560
Wed 5/17:15 amSEA - BSL
2 stops20h 40mUnited Airlines
Deal found 3/18$563
Thu 4/257:20 amSEA - BSL
2 stops17h 25mDelta
Deal found 3/18$564
Mon 5/2711:59 pmSEA - BSL
3 stops38h 16mMultiple Airlines
Deal found 3/18$565

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 3,145,932 searches. Data last updated March 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$571 - $702

Route

Depart

Return

Price

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sun 4/28

1 stop13h 35m

Basel EuroAirport Swiss

Tue 5/7

1 stop13h 55m

$571

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 4/17

2 stops19h 05m

Basel EuroAirport Swiss

Wed 4/24

2 stops19h 15m

$576

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 4/17

1 stop14h 25m

Basel EuroAirport Swiss

Wed 4/24

1 stop31h 10m

$583

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sun 4/28

2 stops24h 23m

Basel EuroAirport Swiss

Tue 5/7

2 stops25h 01m

$584

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sun 4/28

3 stops26h 02m

Basel EuroAirport Swiss

Tue 5/7

2 stops24h 47m

$611

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 9/3

2 stops33h 40m

Basel EuroAirport Swiss

Fri 9/20

2 stops22h 46m

$640

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Thu 4/18

1 stop19h 25m

Basel EuroAirport Swiss

Sun 4/21

1 stop24h 50m

$673

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 9/3

2 stops23h 30m

Basel EuroAirport Swiss

Fri 9/20

1 stop16h 19m

$676

Seattle/Tacoma IntlBasel EuroAirport Swiss

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Thu 4/18

1 stop22h 45m

Basel EuroAirport Swiss

Sun 4/21

2 stops35h 45m

$702

Flights are sorted by cheapest first

Deals found on 3/18

When is the cheapest time to fly from Seattle to Basel?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Basel. Price data was last updated on March 10, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
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.
Search Deals

Average price of flights to Basel by month

Plan your trip from Seattle to Basel by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to Basel is currently $524 while a round-trip flight costs $624. Price data was last updated on March 17, 2024.

Currently, January is the cheapest month in which you can book a flight from Seattle to Basel (average of $0). Flying from Seattle to Basel in June is currently the most expensive (average of $1,482). 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.

Temperature and rainfall in Basel by month

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

EAP

Temperature

33.8 - 66.2 °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 March 19, 2024.
Read reviews from past customers who have flown Lufthansa, American Airlines and United Airlines 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.
8.1
Very good
11,551 reviews

Food

7.5

Comfort

7.9

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very good
11,551 reviews
8.1
Very good
11,551 reviews

Food

7.5

Comfort

7.9

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.6
Good
1,910 reviews
8.1
Very good
11,551 reviews

Food

7.5

Comfort

7.9

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.4
Good
11,602 reviews
8.1
Very good
11,551 reviews

Food

7.5

Comfort

7.9

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.3
Good
15,312 reviews
8.1
Very good
11,551 reviews

Food

7.5

Comfort

7.9

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.1
Good
7,933 reviews
8.1
Very good
11,551 reviews

Food

7.5

Comfort

7.9

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

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.
  • Can I find flights from Seattle to Basel for under $600 on Cheapflights?

    Yes, there are multiple flights from Seattle to Basel for under $600. The cheapest flight booked recently is on British Airways for just $571, but on average you can expect to pay $795.

  • 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 $571 on this airline. Additional options worth looking into are Lufthansa and American Airlines, starting at $576 and $584 round-trip. British Airways is 54% 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 $559 on Delta. Other airlines that offer cheap prices include United Airlines from $563 and American Airlines from $1,637 one-way.

  • What does SEA to BSL mean?

    This is defined as Seattle/Tacoma Intl Airport (SEA) and Basel EuroAirport Swiss (BSL). Codes like Basel EuroAirport Swiss are often used to just call airports uniquely. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Mulhouse EuroAirport (MLH).

See more FAQs

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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

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 3,145,932 searches. Data last updated March 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$731Average$1,356FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
British AirwaysCheapest$784Average$1,285FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Search flights from Seattle to Basel by cabin class

Find flights from Seattle to Basel, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Basel?

When you search for this flight from Seattle to Basel, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Basel?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to Basel for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seattle to Basel with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to Basel with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Basel become cheaper?

Of course! You can now track prices for flights from Seattle to Basel and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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