$69 Cheap Flights from Dublin (DUB) to Rennes (RNS)

View $69 flight on Sat, Sep 20, 2025Opens in a new window

Popular airlines from Dublin Airport (DUB) to Rennes (RNS-Saint-Jacques)

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Cheap Flights from Dublin to Rennes (DUB-RNS)

Prices were available within the past 7 days and start at $69 for one-way flights and $168 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Sat, Sep 20 - Wed, Sep 24
DUB
Dublin
RNS
Rennes
$168 Roundtrip, found 6 days ago
$168
Roundtrip
found 6 days ago
Select Aer Lingus flight, departing Sat, Sep 20 from Dublin to Rennes, returning Wed, Sep 24, priced at $168 found 6 days ago
Aer Lingus
Sat, Sep 20 - Wed, Sep 24
DUB
Dublin
RNS
Rennes
$170 Roundtrip, found 1 day ago
$170
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Sat, Sep 20 from Dublin to Rennes, returning Wed, Sep 24, priced at $170 found 1 day ago
Aer Lingus
Wed, Sep 24 - Sat, Sep 27
DUB
Dublin
RNS
Rennes
$172 Roundtrip, found 5 hours ago
$172
Roundtrip
found 5 hours ago
Select Aer Lingus flight, departing Wed, Sep 24 from Dublin to Rennes, returning Sat, Sep 27, priced at $172 found 5 hours ago
Aer Lingus
Sat, Sep 13 - Sat, Sep 20
DUB
Dublin
RNS
Rennes
$196 Roundtrip, found 9 hours ago
$196
Roundtrip
found 9 hours ago
Select Aer Lingus flight, departing Sat, Sep 13 from Dublin to Rennes, returning Sat, Sep 20, priced at $196 found 9 hours ago
Aer Lingus
Wed, Sep 17 - Wed, Sep 24
DUB
Dublin
RNS
Rennes
$231 Roundtrip, found 1 day ago
$231
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Wed, Sep 17 from Dublin to Rennes, returning Wed, Sep 24, priced at $231 found 1 day ago
KLM
Sat, Sep 13 - Sat, Sep 20
DUB
Dublin
RNS
Rennes
$263 Roundtrip, found 9 hours ago
$263
Roundtrip
found 9 hours ago
Select KLM flight, departing Sat, Sep 13 from Dublin to Rennes, returning Sat, Sep 20, priced at $263 found 9 hours ago
Aer Lingus
Sat, Sep 13 - Sat, Sep 20
DUB
Dublin
RNS
Rennes
$265 Roundtrip, found 9 hours ago
$265
Roundtrip
found 9 hours ago
Select Aer Lingus flight, departing Sat, Sep 13 from Dublin to Rennes, returning Sat, Sep 20, priced at $265 found 9 hours ago
KLM
Sun, Sep 21 - Wed, Sep 24
DUB
Dublin
RNS
Rennes
$265 Roundtrip, found 6 days ago
$265
Roundtrip
found 6 days ago
Select KLM flight, departing Sun, Sep 21 from Dublin to Rennes, returning Wed, Sep 24, priced at $265 found 6 days ago
Air France
Sun, Sep 14 - Sun, Sep 21
DUB
Dublin
RNS
Rennes
$266 Roundtrip, found 9 hours ago
$266
Roundtrip
found 9 hours ago
Select Air France flight, departing Sun, Sep 14 from Dublin to Rennes, returning Sun, Sep 21, priced at $266 found 9 hours ago
Aer Lingus
Sat, Sep 20 - Wed, Sep 24
DUB
Dublin
RNS
Rennes
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Sat, Sep 20 from Dublin to Rennes, returning Wed, Sep 24, priced at $274 found 1 day ago
Flights from Dublin (DUB) to Rennes (RNS)
Origin airport
Dublin
Destination airport
Saint-Jacques
Airlines serving
Aer Lingus, Air France, KLM
Roundtrip price
$167
Distance
419 mi

Dublin to Rennes Flights

The cheapest times to fly from Dublin 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 Dublin to Rennes are during the month of September. You can find some of the cheapest flights from Dublin to Rennes with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Dublin to Rennes

Sunday is one of the best days to book for cheap flights from Dublin 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 Dublin 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 Dublin to Rennes in 2025. You can also book with separate airlines for your outbound and return journeys, from $69 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 Dublin 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 Dublin 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.

 

Frequently asked questions

How much does a flight from Dublin Airport (DUB) to Saint-Jacques Airport (RNS) cost?
Lock in a cheap one-way flight from $69 or cheap return flight from $168 from Dublin Airport (DUB) to Saint-Jacques Airport (RNS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Dublin Airport (DUB) to Saint-Jacques Airport (RNS)?
September is the most affordable month to fly from DUB to RNS. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Dublin Airport (DUB) to Saint-Jacques Airport (RNS)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from DUB to RNS. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Dublin Airport (DUB) to Saint-Jacques Airport (RNS)?
You'll have to catch a flight with a layover if you're traveling from Dublin Airport (DUB) to Saint-Jacques Airport (RNS). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from DUB to RNS?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Dublin Airport (DUB) to Saint-Jacques Airport (RNS)?
To avoid potential delays on the Dublin Airport (DUB) to Saint-Jacques Airport (RNS) route, aim to travel before 3 PM. Flights after this time have a 22% higher chance of being 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 Dublin Airport (DUB) to Saint-Jacques Airport (RNS) last-minute?
Booking your ticket from DUB to RNS right before your trip is typically more expensive. However, if there's some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a DUB to RNS flight and hotel package?
You'll generally save money by securing a DUB to RNS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your preferred accommodations and flights, you can add extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Dublin Airport (DUB) to Saint-Jacques Airport (RNS)?
Usually, it's possible to reschedule or cancel your DUB to RNS flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.