Cheap flights from Seattle to Basel from $420
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Basel departing on 5/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Seattle to Basel
Cheap round-trip flights
Cheap one-way flights
British Airways flights from Seattle to Basel
Our best British Airways deals on Seattle to Basel flight tickets
Lufthansa flights from Seattle to Basel
Our best Lufthansa deals on Seattle to Basel flight tickets
See travel insights to Basel from
How to get the cheapest flight ticket from Seattle to Basel
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Seattle and Basel?
What is the cheapest month to fly to Basel?
If you aren’t able to travel to Basel during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $616.
What is the cheapest day to depart on your flight to Basel?
On average, the least expensive day to fly to Basel from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $561. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Basel is Thursday, with ticket prices averaging around $997.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Basel?
Air France, Lufthansa, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Basel
What airlines fly to Basel?
British Airways, Air France and Delta are the top three most popular airlines that fly to Basel from Seattle according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Basel. Keep in mind that there are 3 different airlines that fly to Basel on a routine basis, so you have a few additional options to choose from.
When to book flights from Seattle to Basel
Cheap Seattle to Basel (SEA to EAP) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Basel
How far is Seattle/Tacoma Intl to Basel by plane?
A flight from Seattle/Tacoma Intl to Basel will travel around 5202.0 mi. Typically, this will take 11h 30m by plane in normal conditions.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Basel?
Prices for flights from Seattle/Tacoma Intl Airport to Basel are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Basel?
As of April 2025, there are 3 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Basel.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Basel?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Basel.
What documentation or ID do you need to fly to Basel?
The travel and health documents required for your trip to Basel can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Basel. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Seattle to Basel?
momondo data reveals that the most frequently booked airline on the route from Seattle to Basel is British Airways, representing 67% of all bookings. The subsequent popular airline is Lufthansa at 33%.
Best airlines flying from Seattle to Basel
Compare and see reviews for airlines that fly from Seattle to Basel with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $443 | Free Cancellation | Rating 6.6 6,767 reviews | |||
| PriceFrom $502 | Free Cancellation | Rating 7.5 1,435 reviews | |||
| PriceFrom $513 | Free Cancellation | Rating 8.0 7,917 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Basel?
It is quick and easy to find Seattle to Basel flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Basel that suits you.
Can I find flights from Seattle to Basel with flexible booking policies on momondo?
Yes. All flights to Basel from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to Basel?
Once you have performed a search for Seattle to Basel flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Seattle to Basel right now. Can momondo alert me if prices change?
Price alerts on flights to Basel from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.