Cheap flights from California to London from $254
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to London departing on 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from California to London
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
KLM flights from California to Southampton
Our best KLM deals on California to Southampton flight tickets
British Airways flights from California to Southampton
Our best British Airways deals on California to Southampton flight tickets
See travel insights to London from
How to get the cheapest flight ticket from California to Southampton
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Southampton?
If you don’t want to visit Southampton in February, then you should wait until April to fly from California, when ticket prices are also cheap, with an average price of $845.
What is the cheapest day to depart on your flight to Southampton?
On average, the least expensive day to fly to Southampton from California is on a Monday. momondo users have found tickets for Monday departures for as low as $988. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from California to Southampton for around $1,198.
What is the cheapest time of day to depart on your flight to Southampton?
Flying to Southampton from California in the evening is the least expensive time of day to depart. momondo users have found prices as low as $993 when looking at flights departing in the evening. Flights to Southampton are more costly in the afternoon, with an average ticket price of $1,195. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.
Can stopping save me money on California to Southampton flights?
You could potentially save up to 15% on your flight if you consider stops on a California to Southampton flight.
What is the cheapest airline that flies from California to Southampton Eastleigh?
Aer Lingus, Delta, and KLM are the most popular carriers operating from California to Southampton Eastleigh
What airlines fly to Southampton?
British Airways, United Airlines and Iberia are the top three most popular airlines that fly to Southampton from California according to our data. British Airways is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 21 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.
Cheap California to Southampton flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from California to Southampton
When did momondo last update prices for flights from California to Southampton Eastleigh Airport?
Prices for flights from California to Southampton Eastleigh Airport are refreshed on a daily basis.
How many operators does momondo search for flights from California to Southampton Eastleigh Airport?
As of June 2025, there are 4 operators available to choose from for flights from California to Southampton Eastleigh Airport.
How old do you have to be to fly from California to Southampton Eastleigh Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from California to Southampton Eastleigh Airport.
What documentation or ID do you need to fly to Southampton Eastleigh Airport?
The required travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from California to Southampton
Compare and see reviews for airlines that fly from California to Southampton with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $652 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom $747 | Free Cancellation | Rating 7.8 1,361 reviews | |||
| PriceFrom $768 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $817 | Free Cancellation | Rating 7.4 652 reviews |
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from California to Southampton?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from California to Southampton for you.
Can I find flights from California to Southampton with flexible booking policies on momondo?
All flight searches from California to Southampton on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from California to Southampton?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from California to Southampton.
I’m not ready to book a flight from California to Southampton right now. Can momondo alert me if prices change?
Price alerts on flights to Southampton from California are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.