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$187+ Cheap flights from Sacramento (SMF) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
SMF — LON
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Sacramento Intl to London are usually found in October or September, booked 7 days in advance, depart on a Tuesday or Sunday and return on a Tuesday

Cheap flight deals from Sacramento to London

Discover tips and strategies to find the most affordable flight options for your journey from Sacramento (SMF) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$603
(United Airlines)

One-way from

$187
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$812
From Sacramento Intl to London (LON)
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One-way flight from Sacramento Intl to London (LON)
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Highest demand for flights based on searches. 16% potential increase in price ($197 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Sacramento to London

Cheapest flights from Sacramento to London
Explore the most affordable flight options available from Sacramento to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:05 pmSMF - LHR
1 stop12h 45mUnited Airlines
Tue 11/111:25 pmLHR - SMF
2 stops41h 00mUnited Airlines
Deal found 9/10$603
This Scandinavian Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/82:37 pmSMF - LHR
2 stops19h 03mScandinavian Airlines
Wed 10/226:40 amLHR - SMF
2 stops18h 31mScandinavian Airlines
Deal found 9/11$604
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:49 amSMF - LHR
1 stop16h 51mUnited Airlines
Tue 11/181:25 pmLHR - SMF
2 stops30h 29mUnited Airlines
Deal found 9/11$608
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:45 pmSMF - LHR
1 stop30h 55mUnited Airlines
Thu 10/162:10 pmLHR - SMF
1 stop33h 04mUnited Airlines
Deal found 9/10$609
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/44:00 pmSMF - LHR
1 stop33h 40mUnited Airlines
Tue 11/112:30 pmLHR - SMF
1 stop32h 47mUnited Airlines
Deal found 9/11$610
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:00 amSMF - LHR
2 stops20h 20mAir Canada
Thu 11/272:30 pmLHR - SMF
2 stops39h 11mAir Canada
Deal found 9/10$614
This United deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:00 amSMF - LHR
1 stop24h 10mMultiple Airlines
Tue 10/75:40 pmLHR - SMF
1 stop35h 00mMultiple Airlines
Deal found 9/10$615
This United deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/511:10 amSMF - LHR
1 stop12h 15mMultiple Airlines
Wed 10/1510:50 amLHR - SMF
2 stops18h 56mMultiple Airlines
Deal found 9/10$616
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amSMF - LHR
2 stops16h 30mMultiple Airlines
Wed 10/152:10 pmLHR - SMF
1 stop33h 04mMultiple Airlines
Deal found 9/9$620
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:00 pmSMF - LHR
1 stop12h 40mUnited Airlines
Tue 11/2510:25 amLHR - SMF
1 stop16h 31mUnited Airlines
Deal found 9/11$621
This Air Canada deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:00 amSMF - LHR
2 stops15h 30mAir Canada
Fri 11/212:30 pmLHR - SMF
1 stop32h 47mAir Canada
Deal found 9/11$622
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:00 amSMF - LHR
1 stop15h 40mUnited Airlines
Thu 12/2512:05 pmLHR - SMF
1 stop18h 24mUnited Airlines
Deal found 9/10$623

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sacramento to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Sacramento to London that are best for you.

Fly from

Sacramento

Fly to

London

Route

Depart

Return

Price

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Wed 11/12

11:14 am-6:30 pm

2 stops23h 16m

London Heathrow

Tue 11/18

7:05 am-10:54 pm

3 stops23h 49m

$608

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Wed 11/12

8:49 am-9:40 am

1 stop16h 51m

London Heathrow

Tue 11/18

1:25 pm-11:54 am

2 stops30h 29m

$608

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Sat 11/15

11:06 pm-9:20 pm

1 stop14h 14m

London Heathrow

Wed 11/26

1:25 pm-10:35 pm

2 stops41h 10m

$608

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Tue 11/11

8:49 am-9:40 am

1 stop16h 51m

London Heathrow

Tue 11/18

1:25 pm-6:56 pm

2 stops37h 31m

$608

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Fri 11/14

4:05 pm-10:10 am

2 stops58h 05m

London Heathrow

Tue 11/25

3:00 pm-3:17 pm

2 stops56h 17m

$616

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Wed 11/12

8:00 am-6:40 am

1 stop14h 40m

London Heathrow

Fri 11/21

1:45 pm-7:41 pm

1 stop13h 56m

$621

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Wed 11/12

1:00 pm-9:40 am

1 stop12h 40m

London Heathrow

Tue 11/25

10:25 am-6:56 pm

1 stop16h 31m

$621

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Wed 12/10

1:06 pm-9:40 am

1 stop12h 34m

London Heathrow

Thu 12/25

11:35 am-5:52 pm

1 stop14h 17m

$623

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Tue 11/11

6:05 am-7:05 am

1 stop17h 00m

London Heathrow

Tue 11/18

10:45 am-6:25 pm

1 stop15h 40m

$631

SacramentoLondon

SMF - LCY

SMFLCY

Sacramento Intl

Wed 10/1

8:15 am-12:30 pm

2 stops20h 15m

London City

Tue 10/7

8:45 am-9:59 pm

2 stops21h 14m

$736

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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Best time to book a flight from Sacramento to London

Have a flexible travel schedule? Discover the best time to fly to London from Sacramento with our price prediction graph.
Estimated round-trip 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.

Cheapflights Insights

Everything you need to know about your flight from Sacramento to London

How far ahead should I book a flight from Sacramento to London?

Use this chart to determine the optimal time to book a round-trip flight from Sacramento to London. Price data was last updated on August 29, 2025.

The price you pay for your flight from Sacramento to London may vary depending on when you book. For the best chance of a lower fare, look to book 7 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Sacramento to London?

Currently, November is the cheapest month in which you can book a flight from Sacramento to London (average of $661). Flying from Sacramento to London in June is currently the most expensive (average of $1,098). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SMF to LON?

Find hourly flight availability from Sacramento to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Sacramento to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 23% versus a flight in the evening.

What is the cheapest day to fly from Sacramento to London?

Use this chart to determine the cheapest time to fly round-trip from Sacramento to London. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Sacramento to London flight should consider departing on Friday evenings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and Virgin Atlantic from Sacramento to London. 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.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
664 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.2
Good
2,913 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Sacramento to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sacramento to London?

    If you book a flight to London from Sacramento, you will be flying from Sacramento Intl, which is the city’s only airport. Sacramento Intl (SMF) is located 9.4 mi from the center of Sacramento. There are 0 flights from Sacramento Intl to London per day from 10 different airlines.

  • How long is the flight from Sacramento to London?

    Airlines like Scandinavian Airlines, United Airlines, and Air Canada fly from Sacramento to London in about 16h 51m. The time it takes to get you to your destination can typically vary by up to 41h 14m. There are 5265 mi between Sacramento and London. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Sacramento to London round-trip?

    Air Canada, at $615, was found to be the cheapest airline from Sacramento to London.Alternate airlines to your destination round-trip include Virgin Atlantic and Scandinavian Airlines. Air Canada is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from Sacramento to London?

    When deciding which route to take from Sacramento to London consider Sacramento Intl - London Heathrow, Sacramento Intl - London Gatwick or Sacramento Intl - London City as they are the most popular.

  • Can I find deals for flights from Sacramento to London that include hotel bookings?

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

  • How can I find direct flights from Sacramento to London?

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

  • Can I find deals for business class flights from Sacramento to London?

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

  • What is the cheapest month to book a flight from Sacramento to London?

    Currently, November is the cheapest month in which you can book a flight from Sacramento to London (average of $661). Flying from Sacramento to London in June is currently the most expensive (average of $1,098). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Wembley
Folkestone
Chichester
Arundel

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Top 10 airlines flying from Sacramento to London

Discover the top 10 airlines that operate flights from Sacramento to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$615Average$965FlexibilityNo cancel feeOn-time67%
Virgin AtlanticCheapest$678Average$1,002FlexibilityNo cancel feeOn-time72%
Scandinavian AirlinesCheapest$683Average$770FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$697Average$986FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$703Average$971FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$703Average$909FlexibilityNo cancel feeOn-time71%
DeltaCheapest$703Average$1,025FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$731Average$1,013FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$743Average$1,058FlexibilityNo cancel feeOn-time62%
IberiaCheapest$889Average$1,257FlexibilityNo cancel feeOn-time77%

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