How long is the flight from Grimsby to San Francisco?

A quick flight from Grimsby to San Francisco can take about 19h 32m. KLM provides one of the quickest options available for as low as £652. Grimsby and San Francisco are separated by a distance of 5248 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What is the cheapest airline to fly from Grimsby to San Francisco round-trip?

According to our current data, KLM (£656), offers the cheapest pricing from Grimsby to San Francisco.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Grimsby to San Francisco as you normally would.

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

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

How can I find direct flights from Grimsby to San Francisco?

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

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

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

£628+ Cheap Flights from Grimsby to San Francisco

Cheap flight deals from Grimsby to San Francisco

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

Cheapest flights from Grimsby to San Francisco
Explore the most affordable flight options available from Grimsby to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Mon 12/1009:50 -

1 stop33h 55m

Mon 19/1013:45 -

1 stop19h 20m

Deal found 3/9£628

Mon 12/1017:35 -

1 stop26h 10m

Mon 19/1013:45 -

1 stop19h 20m

Deal found 31/8£631

Mon 12/1009:50 -

2 stops18h 28m

Mon 19/1013:45 -

1 stop19h 20m

Deal found 3/9£646

Mon 12/1009:50 -

2 stops19h 32m

Mon 19/1010:35 -

2 stops22h 30m

Deal found 3/9£652

Mon 12/1006:10 -

2 stops23h 12m

Mon 19/1007:00 -

2 stops18h 20m

Deal found 31/8£654

Find flight deals from Grimsby to San Francisco

Round-trip from	£628

KLM
12/10-19/10
2 total stops
53h 15m total
Grimsby to San Francisco

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Grimsby to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GrimsbySan Francisco

HUY Grimsby Humberside - SFO San Francisco

HUYSFO

Grimsby Humberside

Mon 12/10

09:50-11:45

1 stop33h 55m

San Francisco

Mon 19/10

13:45-17:05

1 stop19h 20m

£628

GrimsbySan Francisco

HUY Grimsby Humberside - SFO San Francisco

HUYSFO

Grimsby Humberside

Mon 12/10

17:35-11:45

1 stop26h 10m

San Francisco

Mon 19/10

13:45-17:05

1 stop19h 20m

£631

GrimsbySan Francisco

HUY Grimsby Humberside - SFO San Francisco

HUYSFO

Grimsby Humberside

Mon 12/10

09:50-21:22

2 stops19h 32m

San Francisco

Mon 19/10

10:35-17:05

2 stops22h 30m

£652

Fastest return journey

GrimsbySan Francisco

HUY Grimsby Humberside - SFO San Francisco

HUYSFO

Grimsby Humberside

Mon 12/10

06:10-21:22

2 stops23h 12m

San Francisco

Mon 19/10

07:00-09:20

2 stops18h 20m

£654

GrimsbySan Francisco

HUY Grimsby Humberside - SFO San Francisco

HUYSFO

Grimsby Humberside

Mon 12/10

06:10-13:35

3 stops39h 25m

San Francisco

Mon 19/10

06:00-09:20

3 stops43h 20m

£1,089

Flights are sorted by cheapest return flights first.

Deals found on 3/9

Sorted by cheapest first

Best time to book a flight from Grimsby to San Francisco

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

HUY-SFO

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.

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown with KLM from Grimsby to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

KLM

7.8

Good

1,571 reviews

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

Related info for your journey

How long is the flight from Grimsby to San Francisco?
A quick flight from Grimsby to San Francisco can take about 19h 32m. KLM provides one of the quickest options available for as low as £652. Grimsby and San Francisco are separated by a distance of 5248 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What is the cheapest airline to fly from Grimsby to San Francisco round-trip?
According to our current data, KLM (£656), offers the cheapest pricing from Grimsby to San Francisco.
Can I find deals for flights from Grimsby to San Francisco that include hotel bookings?
Yes. In addition to deals on Grimsby to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Grimsby to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Grimsby to San Francisco.
Can I find deals for business class flights from Grimsby to San Francisco?
Yes. Cheapflights offers flight deals from Grimsby to San Francisco 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 airline flying from Grimsby to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest£656	Average£657	FlexibilityNo cancel fee	On-time75%	Search KLM flights

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How does Cheapflights help users find flights from Grimsby to San Francisco?

Cheapflights makes it easy to find Grimsby to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Grimsby.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Grimsby to San Francisco flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Grimsby today and book when prices fit your budget.

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Cheap flights from Grimsby to San Francisco from £628

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Grimsby to San Francisco

Cheapest flights from Grimsby to San FranciscoExplore the most affordable flight options available from Grimsby to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Explore the most affordable flight options available from Grimsby to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Best flights from Grimsby to San FranciscoDiscover carefully curated flight deals from Grimsby to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 September 2026.

Discover carefully curated flight deals from Grimsby to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 September 2026.

Last-minute flights from Grimsby to San FranciscoDiscover last-minute flight deals from Grimsby to San Francisco. Data last updated 4 September 2026 and is based on user searches.

Discover last-minute flight deals from Grimsby to San Francisco. Data last updated 4 September 2026 and is based on user searches.

Find flight deals from Grimsby to San Francisco

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Use the filters below to find and compare flights from Grimsby to San Francisco that are best for you.

Best time to book a flight from Grimsby to San Francisco

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

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown with KLM from Grimsby to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Grimsby to San Francisco?

What is the cheapest airline to fly from Grimsby to San Francisco round-trip?

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

How can I find direct flights from Grimsby to San Francisco?

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

Travelling to a place near San Francisco?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Grimsby to San Francisco

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Complete your trip

Complete your trip to San Francisco by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to California

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Search flights from Grimsby to San Francisco by cabin class

Find flights from Grimsby to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Grimsby and San Francisco flights

Browse other Grimsby and San Francisco flight options. Last updated on 4 September 2026.

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Top airline flying from Grimsby to San Francisco

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

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

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Cheapest flights from Grimsby to San Francisco
Explore the most affordable flight options available from Grimsby to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Best flights from Grimsby to San Francisco
Discover carefully curated flight deals from Grimsby to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 September 2026.

Last-minute flights from Grimsby to San Francisco
Discover last-minute flight deals from Grimsby to San Francisco. Data last updated 4 September 2026 and is based on user searches.