$1,011+ Cheap flights from San Francisco (SFO) to Rennes (RNS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — RNS
jun. 17 — jun. 241
1 adult, Economy
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Cheapest flights from San Francisco to RennesExplore the most affordable flight options available from San Francisco to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
Explore the most affordable flight options available from San Francisco to Rennes. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/63:05 pmSFO - RNS
1 stop13h 40mKLM
lun. 10/204:35 pmRNS - SFO
1 stop28h 10mKLM
Deal found 6/10![KLM logo]()
$1,011
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/69:00 amSFO - RNS
2 stops19h 45mDelta
lun. 10/204:35 pmRNS - SFO
1 stop28h 10mDelta
Deal found 6/10![Delta logo]()
$1,015
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Rennes 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 junio 12, 2025.
Use the filters below to find and compare flights from San Francisco to Rennes that are best for you.
Fly from
San Francisco
Fly to
Rennes
Route
Depart
Return
Price
San FranciscoRennes
SFO - RNS
SFORNS
San Francisco
lun. 10/6
3:05 pm-1:45 pm
1 stop13h 40m
Rennes St Jacques
lun. 10/20
4:35 pm-11:45 am
1 stop28h 10m
$1,011
San FranciscoRennes
SFO - RNS
SFORNS
San Francisco
lun. 10/6
9:00 am-1:45 pm
2 stops19h 45m
Rennes St Jacques
lun. 10/20
4:35 pm-11:45 am
1 stop28h 10m
$1,015
Best time to book a flight from San Francisco to Rennes
Have a flexible travel schedule? Discover the best time to fly to Rennes from San Francisco 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 San Francisco to Rennes
What is the cheapest time of day to fly from SFO to RNS?
Find hourly flight availability from San Francisco to Rennes. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.
When flying from San Francisco to Rennes, 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 31% versus a flight in the morning.
Rainfall in Rennes by month
Plan your trip to Rennes by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Rennes ranges from 1.5 - 3.0 inches per month. October is typically the wettest month, when rainfall can reach 3.0 in. August is typically the driest time to visit Rennes when rainfall is around 1.5 in.
Temperature in Rennes by month
Plan your trip to Rennes by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Rennes, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Rennes. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Francisco to Rennes
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from San Francisco to Rennes
Discover the top airline that operate flights from San Francisco to Rennes. 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 junio 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,279 | Average$1,527 | FlexibilityNo cancel fee | On-time75% |