What is the cheapest airline that flies from Seattle/Tacoma Intl to Cambridge?

Austrian Airlines, Lufthansa, and Icelandair are the most popular carriers operating from Seattle/Tacoma Intl to Cambridge

What airlines fly to Cambridge?

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to Cambridge from Seattle according to our data. British Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Cambridge. Keep in mind that there are 14 different airlines that fly to Cambridge on a routine basis, so you have a few additional options to choose from.

How many flights depart from Seattle to Cambridge on average per day?

9 flights are operational daily from Seattle to Cambridge as of December 2025. The most popular departure time for this route is 4:00PM, with 61% of flights per day taking off in the afternoon.

How many flights depart from Seattle to Cambridge on average per week?

As of December 2025, 67 flights take off from Seattle and land in Cambridge each week. The most common flight departure day for this route is Sat, with 24% of weekly flights taking off on this day.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Cambridge?

Prices for flights from Seattle/Tacoma Intl Airport to Cambridge are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Cambridge?

As of December 2025, there are 14 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Cambridge.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Cambridge?

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 Cambridge.

What documentation or ID do you need to fly to Cambridge?

The necessary travel and health documents for your Cambridge trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$343 Cheap Flights from Seattle to Cambridge in 2025/26

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Find the cheapest flights from Seattle to London

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:10 am - 6:40 am

SEA

LHR

14h 30m1 stop

9:00 am - 9:12 pm

LHR

SEA

20h 12m2 stops

$579Multiple Airlines

Sat, Jan 10 - Fri, Jan 23

3:40 pm - 11:50 am

SEA

LHR

12h 10m1 stop

6:35 am - 7:16 pm

LHR

SEA

20h 41m2 stops

$580Lufthansa

Fri, Jan 9 - Tue, Jan 20

2:35 pm - 10:50 am

SEA

LHR

12h 15m1 stop

12:15 pm - 5:00 pm

LHR

SEA

12h 45m1 stop

$581Icelandair

Sat, Jan 10 - Tue, Feb 10

2:35 pm - 10:50 am

SEA

LHR

12h 15m1 stop

8:35 pm - 5:00 pm

LHR

SEA

28h 25m1 stop

$582Icelandair

Sun, Jan 11 - Sat, Jan 24

9:55 am - 11:50 am

SEA

LHR

17h 55m1 stop

7:40 am - 7:16 pm

LHR

SEA

19h 36m2 stops

$583Lufthansa

Wed, Jan 14 - Sun, Jan 18

8:10 am - 6:40 am

SEA

LHR

14h 30m1 stop

1:35 pm - 8:57 pm

LHR

SEA

39h 22m2 stops

$589Austrian Airlines

Sat, Jan 10 - Sat, Jan 17

3:10 pm - 4:35 pm

SEA

LCY

17h 25m1 stop

5:50 pm - 11:40 am

LCY

SEA

25h 50m1 stop

$649Virgin Atlantic

Mon, Jan 26 - Mon, Feb 2

3:10 pm - 4:35 pm

SEA

LCY

17h 25m1 stop

8:05 pm - 11:50 am

LCY

SEA

23h 45m1 stop

$650Virgin Atlantic

Thu, Jan 15 - Mon, Jan 19

12:35 pm - 5:10 pm

SEA

LCY

20h 35m2 stops

12:15 pm - 9:12 pm

LCY

SEA

40h 57m2 stops

$661SWISS

Sun, Jan 18 - Sat, Jan 31

10:58 am - 12:55 pm

SEA

LCY

17h 57m2 stops

9:20 am - 9:01 pm

LCY

SEA

19h 41m2 stops

$662SWISS

Sun, Jan 25 - Wed, Feb 25

Lufthansa flights from Seattle to Cambridge

Our best Lufthansa deals on Seattle to Cambridge flight tickets

Lufthansa

Jan 9

SEA3:40 pmSeattle/Tacoma Intl

12h 10m

1 stop

LHR11:50 amLondon Heathrow

Jan 20

LHR6:35 amLondon Heathrow

20h 41m

2 stops

SEA7:16 pmSeattle/Tacoma Intl

$580

Find similar

Lufthansa

Jan 14

SEA9:55 amSeattle/Tacoma Intl

17h 55m

1 stop

LHR11:50 amLondon Heathrow

Jan 18

LHR7:40 amLondon Heathrow

19h 36m

2 stops

SEA7:16 pmSeattle/Tacoma Intl

$583

Find similar

Lufthansa

Feb 17

SEA9:55 amSeattle/Tacoma Intl

16h 15m

2 stops

LHR10:10 amLondon Heathrow

Mar 1

LHR7:40 amLondon Heathrow

13h 40m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$584

Find similar

Icelandair flights from Seattle to Cambridge

Our best Icelandair deals on Seattle to Cambridge flight tickets

Icelandair

Jan 10

SEA2:35 pmSeattle/Tacoma Intl

12h 15m

1 stop

LHR10:50 amLondon Heathrow

Feb 10

LHR12:15 pmLondon Heathrow

12h 45m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$581

Find similar

Icelandair

Jan 11

SEA2:35 pmSeattle/Tacoma Intl

12h 15m

1 stop

LHR10:50 amLondon Heathrow

Jan 24

LHR8:35 pmLondon Heathrow

28h 25m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$582

Find similar

Icelandair

Jan 11

SEA2:35 pmSeattle/Tacoma Intl

12h 20m

1 stop

LGW10:55 amLondon Gatwick

Jan 18

LGW11:55 amLondon Gatwick

13h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$597

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sat 1/10

8:10 am-6:40 am

1 stop14h 30m

London Heathrow

Fri 1/23

9:00 am-9:12 pm

2 stops20h 12m

$579

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Fri 1/9

3:40 pm-11:50 am

1 stop12h 10m

London Heathrow

Tue 1/20

6:35 am-7:16 pm

2 stops20h 41m

$580

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sat 1/10

2:35 pm-10:50 am

1 stop12h 15m

London Heathrow

Tue 2/10

12:15 pm-5:00 pm

1 stop12h 45m

$581

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 1/11

2:35 pm-10:50 am

1 stop12h 15m

London Heathrow

Sat 1/24

8:35 pm-5:00 pm

1 stop28h 25m

$582

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 1/14

9:55 am-11:50 am

1 stop17h 55m

London Heathrow

Sun 1/18

7:40 am-7:16 pm

2 stops19h 36m

$583

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sat 1/10

8:10 am-6:40 am

1 stop14h 30m

London Heathrow

Sat 1/17

1:35 pm-8:57 pm

2 stops39h 22m

$589

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 1/26

3:10 pm-4:35 pm

1 stop17h 25m

London City

Mon 2/2

5:50 pm-11:40 am

1 stop25h 50m

$649

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Thu 1/15

3:10 pm-4:35 pm

1 stop17h 25m

London City

Mon 1/19

8:05 pm-11:50 am

1 stop23h 45m

$650

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 1/18

12:35 pm-5:10 pm

2 stops20h 35m

London City

Sat 1/31

12:15 pm-9:12 pm

2 stops40h 57m

$661

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 1/25

10:58 am-12:55 pm

2 stops17h 57m

London City

Wed 2/25

9:20 am-9:01 pm

2 stops19h 41m

$662

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How to get the cheapest flight ticket from Seattle to Cambridge

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

Prices

Airlines

Other information

What is the cheapest month to fly to Cambridge?

In general, November is the cheapest month to fly from Seattle to Cambridge. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $646. If you’re not able to fly to Cambridge in November, then October is your next best option. Flight prices from Seattle to Cambridge during October average around $647.

What is the cheapest Seattle/Tacoma Intl to Cambridge flight route?

Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - Cambridge flight prices

How far in advance should I book a flight to Cambridge?

You are more likely to see cheaper flights to Cambridge from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Cambridge for around $795 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cambridge from Seattle for as low as $692 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Cambridge flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Cambridge flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Cambridge flights?

No. A direct flight is the cheapest option for a flight between Seattle to Cambridge.

Cheap Seattle to Cambridge flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Cambridge

Fastest flight time	9h 25m
Direct flights	Every day
Airports in Cambridge	6 airports

The fastest flight from Seattle to Cambridge takes 9h 25m

Direct flights go from Seattle to Cambridge every day.

There are 6 airports in Cambridge. From Seattle there are direct flights to London Heathrow (LHR).

Search flight deals

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Cambridge?
Prices for flights from Seattle/Tacoma Intl Airport to Cambridge are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Cambridge?
As of December 2025, there are 14 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Cambridge.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Cambridge?
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 Cambridge.
What documentation or ID do you need to fly to Cambridge?
The necessary travel and health documents for your Cambridge trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Cambridge?
momondo data reveals that the most frequently booked plane model on the route from Seattle to Cambridge is Boeing 737-800 Passenger/BBJ2 (winglets), representing 14.72% of all bookings. The subsequent popular models are Airbus A321neo at 12.11%, Boeing 737-900 at 8.69%, and Boeing 787-9 Dreamliner at 8.52%.

Best airlines flying from Seattle to Cambridge

Compare and see reviews for airlines that fly from Seattle to Cambridge with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $465	Free Cancellation	Rating 7.4 1,606 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $481	Free Cancellation	Rating 7.0 590 reviews	Search Icelandair flights
Aer Lingus	PriceFrom $500	Free Cancellation	Rating 7.2 1,394 reviews	Search Aer Lingus flights
American Airlines	PriceFrom $517	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights
Air France	PriceFrom $532	Free Cancellation	Rating 7.4 1,506 reviews	Search Air France flights
British Airways	PriceFrom $543	Free Cancellation	Rating 6.7 7,574 reviews	Search British Airways flights
United Airlines	PriceFrom $547	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $553	Free Cancellation	Rating 8.0 11,448 reviews	Search Alaska Airlines flights
Finnair	PriceFrom $556	Free Cancellation	Rating 7.6 1,336 reviews	Search Finnair flights
Delta	PriceFrom $562	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Cambridge?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Cambridge for you.

Can I find flights from Seattle to Cambridge with flexible booking policies on momondo?

All flight searches from Seattle to Cambridge on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Cambridge?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cambridge from Seattle.

I’m not ready to book a flight from Seattle to Cambridge right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Cambridge now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Cambridge and let you know when they change.

An easier way to manage your Cambridge trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Flights to Londonfrom $330

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Flights to Bristolfrom $426

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Flights to Liverpoolfrom $438

Flights to Aberdeenfrom $521

Flights to Leedsfrom $460

Cheap flights from Seattle to London from $343

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 London departing on 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Lufthansa flights from Seattle to Cambridge

Our best Lufthansa deals on Seattle to Cambridge flight tickets

Icelandair flights from Seattle to Cambridge

Our best Icelandair deals on Seattle to Cambridge flight tickets

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How to get the cheapest flight ticket from Seattle to Cambridge

What is the cheapest month to fly to Cambridge?

What is the cheapest Seattle/Tacoma Intl to Cambridge flight route?

Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - Cambridge flight prices

How far in advance should I book a flight to Cambridge?

What cabin class options are available on Seattle/Tacoma Intl to Cambridge flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Cambridge flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Cambridge flights?

No. A direct flight is the cheapest option for a flight between Seattle to Cambridge.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Cambridge?

Austrian Airlines, Lufthansa, and Icelandair are the most popular carriers operating from Seattle/Tacoma Intl to Cambridge

What airlines fly to Cambridge?

How many flights depart from Seattle to Cambridge on average per day?

9 flights are operational daily from Seattle to Cambridge as of December 2025. The most popular departure time for this route is 4:00PM, with 61% of flights per day taking off in the afternoon.

How many flights depart from Seattle to Cambridge on average per week?

As of December 2025, 67 flights take off from Seattle and land in Cambridge each week. The most common flight departure day for this route is Sat, with 24% of weekly flights taking off on this day.

Cheap Seattle to Cambridge flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Cambridge

Fastest flight time

Direct flights

Airports in Cambridge

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Cambridge?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Cambridge?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Cambridge?

What documentation or ID do you need to fly to Cambridge?

What is the most popular plane model from Seattle to Cambridge?

Best airlines flying from Seattle to Cambridge

Compare and see reviews for airlines that fly from Seattle to Cambridge with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Cambridge?

Can I find flights from Seattle to Cambridge with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Cambridge?

I’m not ready to book a flight from Seattle to Cambridge right now. Can momondo alert me if prices change?

An easier way to manage your Cambridge trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip $[0, preposition:'to ']$[0, article:'to ']$[0, place:'to']

Popular cities $[0, preposition:'in ']$[0, article:'in ']$[0, place:'in']

Popular flights according to clicks in the last 7 days on momondo