£243 Cheap Flights from Sacramento (SMF) to London (LHR)

View £243 flight on Wed, 9 Dec 2026Opens in a new window

Flight 1

Popular airlines from Sacramento Intl. Airport (SMF) to Heathrow Airport (LHR)

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Cheap Flights from Sacramento (SMF) to London (LHR)

Prices were available within the past 7 days and start at £243 for one-way flights and £641 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Mon, 10 Aug - Thu, 20 Aug
SMF
Sacramento
LHR
London
£641 Return, found 18 hours ago
£641
Return
found 18 hours ago
Select KLM flight, departing Mon, 10 Aug from Sacramento to London, returning Thu, 20 Aug, priced at £641 found 18 hours ago
KLM
Tue, 15 Sept - Mon, 5 Oct
SMF
Sacramento
LHR
London
£643 Return, found 2 days ago
£643
Return
found 2 days ago
Select KLM flight, departing Tue, 15 Sept from Sacramento to London, returning Mon, 5 Oct, priced at £643 found 2 days ago
Air Canada
Wed, 16 Sept - Tue, 6 Oct
SMF
Sacramento
LHR
London
£645 Return, found 2 days ago
£645
Return
found 2 days ago
Select Air Canada flight, departing Wed, 16 Sept from Sacramento to London, returning Tue, 6 Oct, priced at £645 found 2 days ago
Air France
Mon, 10 Aug - Thu, 20 Aug
SMF
Sacramento
LHR
London
£646 Return, found 18 hours ago
£646
Return
found 18 hours ago
Select Air France flight, departing Mon, 10 Aug from Sacramento to London, returning Thu, 20 Aug, priced at £646 found 18 hours ago
Alaska Airlines
Tue, 29 Sept - Thu, 1 Oct
SMF
Sacramento
LHR
London
£648 Return, found 7 hours ago
£648
Return
found 7 hours ago
Select Alaska Airlines flight, departing Tue, 29 Sept from Sacramento to London, returning Thu, 1 Oct, priced at £648 found 7 hours ago
Air France
Mon, 14 Sept - Tue, 22 Sept
SMF
Sacramento
LHR
London
£650 Return, found 4 days ago
£650
Return
found 4 days ago
Select Air France flight, departing Mon, 14 Sept from Sacramento to London, returning Tue, 22 Sept, priced at £650 found 4 days ago
United
Mon, 28 Sept - Wed, 30 Sept
SMF
Sacramento
LHR
London
£662 Return, found 7 hours ago
£662
Return
found 7 hours ago
Select United flight, departing Mon, 28 Sept from Sacramento to London, returning Wed, 30 Sept, priced at £662 found 7 hours ago
Iberia
Mon, 10 Aug - Thu, 20 Aug
SMF
Sacramento
LHR
London
£662 Return, found 18 hours ago
£662
Return
found 18 hours ago
Select Iberia flight, departing Mon, 10 Aug from Sacramento to London, returning Thu, 20 Aug, priced at £662 found 18 hours ago
British Airways
Mon, 10 Aug - Thu, 20 Aug
SMF
Sacramento
LHR
London
£662 Return, found 18 hours ago
£662
Return
found 18 hours ago
Select British Airways flight, departing Mon, 10 Aug from Sacramento to London, returning Thu, 20 Aug, priced at £662 found 18 hours ago
Finnair
Mon, 14 Sept - Tue, 22 Sept
SMF
Sacramento
LHR
London
£662 Return, found 4 days ago
£662
Return
found 4 days ago
Select Finnair flight, departing Mon, 14 Sept from Sacramento to London, returning Tue, 22 Sept, priced at £662 found 4 days ago

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to London City LCY. Closest option available. Average driving time to city centre is 21 minutes. Flights from £1,266
LCY
London City
Closest
Average driving time to city centre21 min
Flights from £1,266

Frequently asked questions

How do I find cheap flights from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
To find a cheap flight from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
There are approximately 59 connecting flights per day from Sacramento International (SMF) to London Heathrow (LHR). Some common connection points include Seattle - Tacoma Intl. (SEA), Los Angeles Intl. (LAX), and O'Hare Intl. (ORD).
What is the earliest flight from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
The earliest flight from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) typically departs at approximately 12:40 AM local time. This service is operated by American Airlines and is seasonal, active only in December. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
You'll typically find the most flights from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) on a Tuesday, with around 70 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, United Airlines, and American Airlines. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) are between 12pm and 3pm. About 28% of passengers prefer this time. Many major carriers, including United Airlines, Delta Air Lines and American Airlines, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll arrive in London in the morning or early afternoon, giving you time to settle in.
How long does it take to fly from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
Flying from SMF to LHR with a connection usually takes about 14 hours 50 minutes, traveling roughly 5,269 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
Select the "Business class" and "First class" filters when looking for SMF to LHR flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from Sacramento Intl. (SMF)?
From Sacramento Intl. (SMF), you can fly into London City (LCY), London Intl. (YXU), Heathrow (LHR) and Gatwick (LGW) in London. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Minneapolis - St. Paul Intl. (MSP), O'Hare Intl. (ORD) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) flight and hotel package?
Securing a Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow)?
If you booked your Sacramento, CA (SMF-Sacramento Intl.) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Sacramento Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, United, Virgin Atlantic
Return price
£640
Distance
8429 km

Book with confidence

Compare flights from Sacramento to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Sacramento to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Sacramento Intl. to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Sacramento Intl. (SMF) to Heathrow (LHR)

The easiest way to view the best deals on flights from Sacramento to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Sacramento Intl. to Heathrow start at just £641 and range up to £662.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Sacramento and London
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Sacramento to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Sacramento Intl. to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Sacramento to London easily and book with confidence

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