How long is the flight from Grimsby to Seattle?

There are many flights that can get you from Grimsby to Seattle in 13h 37m. Fly via Air France or Delta to get the fastest option. The distance between Grimsby and Seattle is about 4671 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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

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

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

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

How can I find direct flights from Grimsby to Seattle?

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

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

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

£665+ Cheap Flights from Grimsby to Seattle

Cheap flight deals from Grimsby to Seattle

Enter your travel dates to find the best prices.

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Cheapest flights from Grimsby to Seattle
Explore the most affordable flight options available from Grimsby to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Thu 29/1006:10 -

1 stop13h 37m

Thu 5/1114:35 -

1 stop18h 05m

Deal found 14/9£665

Thu 29/1006:10 -

2 stops21h 06m

Thu 5/1106:00 -

2 stops19h 20m

Deal found 14/9£687

Thu 29/1017:10 -

3 stops32h 00m

Thu 5/1113:50 -

3 stops35h 30m

Deal found 14/9£1,410

Find flight deals from Grimsby to Seattle

Round-trip from	£665

Air France
29/10-5/11
2 total stops
31h 42m total
Grimsby to Seattle

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Fly from

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Route

Depart

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Price

Cheapest return flight

Fastest return journey

GrimsbySeattle

HUY Grimsby Humberside - SEA Seattle/Tacoma Intl

HUYSEA

Grimsby Humberside

Thu 29/10

06:10-12:47

1 stop13h 37m

Seattle/Tacoma Intl

Thu 5/11

14:35-16:40

1 stop18h 05m

£665

GrimsbySeattle

HUY Grimsby Humberside - SEA Seattle/Tacoma Intl

HUYSEA

Grimsby Humberside

Thu 29/10

06:10-20:16

2 stops21h 06m

Seattle/Tacoma Intl

Thu 5/11

06:00-09:20

2 stops19h 20m

£687

GrimsbySeattle

HUY Grimsby Humberside - SEA Seattle/Tacoma Intl

HUYSEA

Grimsby Humberside

Thu 29/10

17:10-18:10

3 stops32h 00m

Seattle/Tacoma Intl

Thu 5/11

13:50-09:20

3 stops35h 30m

£1,410

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Sorted by cheapest first

Best time to book a flight from Grimsby to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Grimsby with our price prediction graph.

HUY-SEA

Estimated return 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.

Related info for your journey

How long is the flight from Grimsby to Seattle?
There are many flights that can get you from Grimsby to Seattle in 13h 37m. Fly via Air France or Delta to get the fastest option. The distance between Grimsby and Seattle is about 4671 mi. This flight may include one or multiple stops.
Can I find deals for flights from Grimsby to Seattle that include hotel bookings?
Yes. In addition to deals on Grimsby to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Grimsby to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Grimsby to Seattle.
Can I find deals for business class flights from Grimsby to Seattle?
Yes. Cheapflights offers flight deals from Grimsby to Seattle 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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Can Cheapflights find flights from Grimsby to Seattle with no change fees?

Need flexible booking options for your flight to Seattle from Grimsby? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

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Cheap flights from Grimsby to Seattle from £665

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Grimsby to Seattle

Cheapest flights from Grimsby to SeattleExplore the most affordable flight options available from Grimsby to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Explore the most affordable flight options available from Grimsby to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Grimsby to SeattleDiscover carefully curated flight deals from Grimsby to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Discover carefully curated flight deals from Grimsby to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from Grimsby to SeattleDiscover last-minute flight deals from Grimsby to Seattle. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Grimsby to Seattle. Data last updated 18 September 2026 and is based on user searches.

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Best time to book a flight from Grimsby to Seattle

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Related info for your journey

How long is the flight from Grimsby to Seattle?

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

How can I find direct flights from Grimsby to Seattle?

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

Travelling to a place near Seattle?

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Direct flights to Washington

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Grimsby and Seattle flights

Browse other Grimsby and Seattle flight options. Last updated on 18 September 2026.

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Other flights to Seattle

Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 September 2026.

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

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

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

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

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Travel Smart

Cheapest flights from Grimsby to Seattle
Explore the most affordable flight options available from Grimsby to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Grimsby to Seattle
Discover carefully curated flight deals from Grimsby to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from Grimsby to Seattle
Discover last-minute flight deals from Grimsby to Seattle. Data last updated 18 September 2026 and is based on user searches.