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

The cheapest airlines for a one-way flight from Seattle to Sheffield are Icelandair ($218), Aer Lingus ($242), and British Airways ($280).

In terms of precipitation, rainfall in Sheffield ranges from 2.0 - 3.5 inches per month. August is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Sheffield when rainfall is around 2.0 in.

If weather is an important factor for your trip to Sheffield, 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 62.6 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

What are the most popular airlines that fly from Seattle to Sheffield?

The most popular airlines flying from Seattle to Sheffield are British Airways, Aer Lingus and Icelandair. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from SEA to SH9?

When flying from Seattle to Sheffield, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Seattle to Sheffield?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Sheffield. On average, Seattle/Tacoma Intl has 0 outbound flights to Sheffield per day from 7 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

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

How can I find direct flights from Seattle to Sheffield?

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

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

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

Find Cheap Flights from Seattle to Sheffield

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Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Popular in	June
Cheapest in	November
Average price	$795

Provider with most accurate pricing for Seattle/Tacoma Intl-Manchester flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Manchester flights.

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Highest demand for flights based on searches. 17% potential increase in price ($197 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).

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Average for round-trip flights in September 2026

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Reviews of airlines servicing Sheffield

Get a feel of what it's like to fly with KLM,Delta, andAer Lingus from Seattle to Sheffield by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,576 reviews

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

KLM

7.8

Good

1,576 reviews

KLM

7.8

Good

1,576 reviews

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Delta

7.8

Good

8,606 reviews

KLM

7.8

Good

1,576 reviews

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Aer Lingus

7.3

Good

1,788 reviews

KLM

7.8

Good

1,576 reviews

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Icelandair

6.9

Okay

752 reviews

KLM

7.8

Good

1,576 reviews

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

British Airways

6.7

Okay

8,232 reviews

KLM

7.8

Good

1,576 reviews

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Related info for your journey

What airport do you fly from for flights from Seattle to Sheffield?
Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Sheffield. On average, Seattle/Tacoma Intl has 0 outbound flights to Sheffield per day from 7 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
What are the cheapest airlines to fly from Seattle to Sheffield one-way?
The cheapest airlines for a one-way flight from Seattle to Sheffield are Icelandair ($218), Aer Lingus ($242), and British Airways ($280).
Can I find deals for flights from Seattle to Sheffield that include hotel bookings?
Yes. In addition to deals on Seattle to Sheffield flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Sheffield?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Sheffield.
Can I find deals for business class flights from Seattle to Sheffield?
Yes. Cheapflights offers flight deals from Seattle to Sheffield by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 7 airlines flying from Seattle to Sheffield

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$497	Average$721	FlexibilityNo cancel fee	On-time76%
Virgin Atlantic	Cheapest$588	Average$776	FlexibilityNo cancel fee	On-time72%
Aer Lingus	Cheapest$597	Average$934	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$618	Average$922	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$621	Average$1,051	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$685	Average$972	FlexibilityNo cancel fee	On-time75%
Lufthansa	Cheapest$767	Average$816	FlexibilityNo cancel fee	On-time76%

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Find cheap flights from Seattle to Sheffield with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Seattle to Sheffield

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Sheffield

Get a feel of what it's like to fly with KLM,Delta, andAer Lingus from Seattle to Sheffield by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Seattle to Sheffield?

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

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

How can I find direct flights from Seattle to Sheffield?

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

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 Sheffield

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

Complete your trip

Complete your trip to Sheffield by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Seattle to Sheffield by cabin class

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

Seattle and Sheffield flights

Browse other Seattle and Sheffield flight options. Last updated on September 25, 2026.

Other flights from Seattle

Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.

Popular flight searches

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Seattle to Sheffield flights

Consider these flights traveling from Seattle to Sheffield.

Top 7 airlines flying from Seattle to Sheffield

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Cheap flights from Seattle (SEA) to Sheffield, England

Find cheap flights from Seattle to Sheffield with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Seattle to Sheffield

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Sheffield

Get a feel of what it's like to fly with KLM,Delta, andAer Lingus from Seattle to Sheffield by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Seattle to Sheffield?

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

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

How can I find direct flights from Seattle to Sheffield?

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

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 Sheffield

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

Complete your trip

Complete your trip to Sheffield by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Seattle to Sheffield by cabin class

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

Seattle and Sheffield flights

Browse other Seattle and Sheffield flight options. Last updated on September 25, 2026.

Other flights from Seattle

Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Seattle to Sheffield flights

Consider these flights traveling from Seattle to Sheffield.

Top 7 airlines flying from Seattle to Sheffield

100% Free

Book with Flexibility

Travel Smart