$708 Cheap Flights from San Francisco (SFO) to Rennes (RNS)

View $708 flight on Fri, Oct 17, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Rennes (RNS-Saint-Jacques)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from San Francisco to Rennes (SFO-RNS)

Prices were available within the past 7 days and start at $708 for one-way flights and $1,127 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air France
Fri, Oct 17 - Sun, Nov 2
SFO
San Francisco
RNS
Rennes
$1,127 Roundtrip, found 6 hours ago
$1,127
Roundtrip
found 6 hours ago
Select Air France flight, departing Fri, Oct 17 from San Francisco to Rennes, returning Sun, Nov 2, priced at $1,127 found 6 hours ago
KLM
Fri, Oct 17 - Sun, Nov 2
SFO
San Francisco
RNS
Rennes
$1,127 Roundtrip, found 6 hours ago
$1,127
Roundtrip
found 6 hours ago
Select KLM flight, departing Fri, Oct 17 from San Francisco to Rennes, returning Sun, Nov 2, priced at $1,127 found 6 hours ago
Delta
Fri, Oct 17 - Sun, Nov 2
SFO
San Francisco
RNS
Rennes
$1,130 Roundtrip, found 6 hours ago
$1,130
Roundtrip
found 6 hours ago
Select Delta flight, departing Fri, Oct 17 from San Francisco to Rennes, returning Sun, Nov 2, priced at $1,130 found 6 hours ago
KLM
Fri, Oct 17 - Sun, Nov 2
SFO
San Francisco
RNS
Rennes
$1,137 Roundtrip, found 6 hours ago
$1,137
Roundtrip
found 6 hours ago
Select KLM flight, departing Fri, Oct 17 from San Francisco to Rennes, returning Sun, Nov 2, priced at $1,137 found 6 hours ago
KLM
Fri, Oct 17 - Sun, Nov 2
SFO
San Francisco
RNS
Rennes
$1,173 Roundtrip, found 6 hours ago
$1,173
Roundtrip
found 6 hours ago
Select KLM flight, departing Fri, Oct 17 from San Francisco to Rennes, returning Sun, Nov 2, priced at $1,173 found 6 hours ago
KLM
Fri, Oct 17 - Sun, Nov 2
SFO
San Francisco
RNS
Rennes
$1,183 Roundtrip, found 6 hours ago
$1,183
Roundtrip
found 6 hours ago
Select KLM flight, departing Fri, Oct 17 from San Francisco to Rennes, returning Sun, Nov 2, priced at $1,183 found 6 hours ago

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS) cost?
Lock in a cheap one-way flight from $708 or cheap return flight from $1,127 from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS)?
The cheapest month to fly from SFO to RNS is October, when there's less demand. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS)?
To find the cheapest airline flying from SFO to RNS, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS)?
Nonstop flights from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SFO to RNS?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS)?
To avoid possible delays on the San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS) route, aim to fly before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS) last-minute?
Holding off until just before your trip to book your flight from SFO to RNS often results in higher prices. Although you may find some last-minute deals, there's no guarantee. Keep your travel plans flexible for the best chance of scoring a bargain.
Is it cheaper to book a SFO to RNS flight and hotel package?
Securing a SFO to RNS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick 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 San Francisco Intl. Airport (SFO) to Saint-Jacques Airport (RNS)?
If you booked your SFO to RNS flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Saint-Jacques
Roundtrip price
$1,126
Distance
5485 mi

Book with confidence

San Francisco to Rennes Flights

The cheapest times to fly from San Francisco to Rennes

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Rennes are during the month of October. You can find some of the cheapest flights from San Francisco to Rennes with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Rennes

Sunday is one of the best days to book for cheap flights from San Francisco to Rennes: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Rennes

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Rennes in 2025. You can also book with separate airlines for your outbound and return journeys, from $708 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Rennes flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Rennes airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to Rennes Flights

Explore a world of travel with Expedia

*Available to One Key members.