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£43+ Direct flights from San Diego

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SAN — LHR
20 Mar — 27 Mar1
1 adult
1 adult, Economy, 0 bags

Direct flights from San Diego

Enter your travel dates to find the best prices.

Cheapest flights from San Diego
Explore the most affordable flight options available from San Diego. Find the lowest fares based on data from user searches, with prices last updated on 18 February 2026.

Thu 30/412:36
SAN
-
DEN
Nonstop2h 34m
Frontier
Thu 7/507:00
DEN
-
SAN
Nonstop2h 34m
Frontier
Deal found 16/2£57
Sat 7/319:30
SAN
-
DEN
Nonstop2h 30m
Southwest
Tue 10/315:30
DEN
-
SAN
Nonstop2h 30m
Southwest
Deal found 14/2£86
Fri 13/321:18
SAN
-
DEN
Nonstop2h 29m
Frontier
Sun 15/322:29
DEN
-
SAN
Nonstop2h 39m
Frontier
Deal found 15/2£101
Mon 16/307:30
SAN
-
DEN
Nonstop2h 25m
Southwest
Mon 23/305:35
DEN
-
SAN
Nonstop2h 40m
Southwest
Deal found 14/2£108
Fri 20/306:25
SAN
-
DEN
Nonstop2h 35m
Frontier
Sun 22/322:29
DEN
-
SAN
Nonstop2h 39m
Frontier
Deal found 15/2£111
Sat 7/311:28
SAN
-
DEN
Nonstop2h 27m
United Airlines
Tue 10/307:45
DEN
-
SAN
Nonstop2h 35m
United Airlines
Deal found 14/2£138
Mon 15/620:01
SAN
-
DEN
Nonstop2h 32m
Alaska Airlines
Mon 22/606:00
DEN
-
SAN
Nonstop2h 36m
Alaska Airlines
Deal found 17/2£145
Thu 12/319:30
SAN
-
DEN
Nonstop2h 30m
Southwest
Mon 16/320:50
DEN
-
SAN
Nonstop2h 30m
Southwest
Deal found 14/2£149
Fri 3/406:32
SAN
-
DEN
Nonstop2h 37m
United Airlines
Fri 17/421:00
DEN
-
SAN
Nonstop2h 30m
United Airlines
Deal found 14/2£160
Fri 20/306:30
SAN
-
DEN
Nonstop2h 28m
United Airlines
Thu 26/321:05
DEN
-
SAN
Nonstop2h 38m
United Airlines
Deal found 15/2£161
Mon 17/816:45
SAN
-
LHR
Nonstop10h 45m
British Airways
Wed 26/814:30
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 16/2£509
Tue 21/419:40
SAN
-
LHR
Nonstop10h 40m
British Airways
Tue 5/511:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 17/2£510

Find direct flights from San Diego within your budget

 
Use the slider to find direct flights from San Diego within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 858,174 searches. This data was last updated on 18 February 2026.

Fly to

Heathrow

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 7/3

19:30-23:00

Nonstop2h 30m

Denver Intl

Tue 10/3

15:30-17:00

Nonstop2h 30m

£86

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 14/5

19:00-22:31

Nonstop2h 31m

Denver Intl

Sun 17/5

20:46-22:16

Nonstop2h 30m

£86

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 23/4

19:00-22:20

Nonstop2h 20m

Denver Intl

Sun 26/4

06:00-07:25

Nonstop2h 25m

£86

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 16/4

06:20-09:45

Nonstop2h 25m

Denver Intl

Sun 19/4

06:00-07:25

Nonstop2h 25m

£86

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Fri 13/3

21:18-00:47

Nonstop2h 29m

Denver Intl

Sun 15/3

22:29-00:08

Nonstop2h 39m

£101

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Mon 16/3

07:30-10:55

Nonstop2h 25m

Denver Intl

Mon 23/3

05:35-07:15

Nonstop2h 40m

£108

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Fri 20/3

06:25-10:00

Nonstop2h 35m

Denver Intl

Sun 22/3

22:29-00:08

Nonstop2h 39m

£111

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 7/3

11:28-14:55

Nonstop2h 27m

Denver Intl

Tue 10/3

07:45-09:20

Nonstop2h 35m

£138

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 30/4

06:32-10:09

Nonstop2h 37m

Denver Intl

Sun 3/5

07:45-09:15

Nonstop2h 30m

£138

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 17/3

06:30-09:58

Nonstop2h 28m

Denver Intl

Tue 24/3

15:51-17:26

Nonstop2h 35m

£138

Flights are sorted by cheapest return flights first.

Deals found on 16/2

Showing 1-10 of 40 results
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Best time to book a flight from San Diego

Have a flexible travel schedule? Discover the best time to fly from San Diego with our price prediction graph.
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 flying non-stop to San Diego

Get insights into the airlines that provide direct flights from San Diego. 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 from San Diego. Reviews last updated Cheapflights.
Get a feel of what it's like to fly with British Airways from San Diego by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,751 reviews
Check prices

Comfort

6.8

Food

6.4

Overall

6.7

Boarding

6.9

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,751 reviews
British Airways
6.7
Okay
7,751 reviews
Check prices

Comfort

6.8

Food

6.4

Overall

6.7

Boarding

6.9

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

Access useful and relevant information related to your journey from San Diego. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 18 February 2026.

  • Where can you fly direct from San Diego?

    Currently, the most popular direct flight destination from San Diego is Sacramento.

  • How much are direct flights from San Diego?

    On average, a one-way direct flight from San Diego will cost users approximately £113. If you're looking for a direct round-trip flight from San Diego, you can expect to pay around £378.

  • How long is a direct flight from San Diego?

    While the flight duration depends heavily on the destination, on average, travelers can expect non-stop flights from San Diego to last approximately 4h 36m on average. The quickest direct flight from San Diego at this time departs from San Diego (1h 40m), while the longest leaves from San Diego (10h 35m).

  • What is the best time of year to fly direct from San Diego?

    If you're seeking the lowest price on a direct flight from San Diego, September is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, January offers travelers the most options.

See more FAQs

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