FRA - DEN

$468 Find Cheap Flights from Frankfurt am Main to Denver - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Frankfurt am Main to Denver departing on 9/20. 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.
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Everything you should know

Cheapest round-trip
$812
Typical prices: $789-$987
Lufthansa
Thu 10/1Mon 10/19
FRA - DEN • Non-stop
Cheapest one-way
$468
Typical prices: $521-$833
Multiple Airlines
Sun 9/20
FRA - DEN • 3 stops
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Lufthansa Economy includes three-course meals and drinks on this long-haul route.
United Premium Plus adds extra legroom and recline; arrive early at Frankfurt Airport.
Expert advice
Expert advice
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Expert advice
Top airlines
Cheapest • from $812 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Lufthansa and United Airlines. Average duration is 10h 10m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 86% on-time
Best time • Fewest delays
Insights
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Insights
Top layover airports
Cheapest • Avg $727 (round-trip)
Shortest trip • 13h 03m (one-way)
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 16% compared to booking last minute.
Insights
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When to travel
Cheapest • 11% price drop
Most popular
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Flight Deals

Cheap Flights from Frankfurt am Main to Denver (FRA-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Frankfurt am Main to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Frankfurt am Main to Denver

Thu, Oct 1 - Mon, Oct 19
Lufthansa Logo
1:30 pm - 3:40 pm
FRA
-
DEN
10h 10mnonstop
Lufthansa Logo
5:40 pm - 11:15 am
DEN
-
FRA
9h 35mnonstop
$812Lufthansa
Thu, Aug 27 - Mon, Aug 31
Icelandair Logo
7:25 am - 7:00 pm
FRA
-
DEN
19h 35m
1 stop
Icelandair Logo
4:40 pm - 1:00 pm
DEN
-
FRA
12h 20m
1 stop
$814Icelandair
Fri, Aug 21 - Sun, Sep 6
Lufthansa Logo
11:20 am - 1:30 pm
FRA
-
DEN
10h 10mnonstop
Lufthansa Logo
5:40 pm - 11:15 am
DEN
-
FRA
9h 35mnonstop
$814Lufthansa
Thu, Aug 27 - Tue, Sep 1
Icelandair Logo
2:00 pm - 7:00 pm
FRA
-
DEN
13h 00m
1 stop
Icelandair Logo
4:40 pm - 1:00 pm
DEN
-
FRA
12h 20m
1 stop
$814Icelandair
Fri, Aug 21 - Sun, Sep 6
Multiple Airlines Logo
11:20 am - 1:30 pm
FRA
-
DEN
10h 10mnonstop
Multiple Airlines Logo
11:44 am - 9:10 am
DEN
-
FRA
13h 26m
1 stop
$814Multiple Airlines
Fri, Oct 30 - Sun, Nov 8
Lufthansa Logo
11:10 am - 2:25 pm
FRA
-
DEN
10h 15mnonstop
Lufthansa Logo
5:35 pm - 2:05 pm
DEN
-
FRA
12h 30m
1 stop
$814Lufthansa
Tue, Aug 25 - Tue, Sep 1
Icelandair Logo
2:00 pm - 7:00 pm
FRA
-
DEN
13h 00m
1 stop
Icelandair Logo
4:40 pm - 1:00 pm
DEN
-
FRA
12h 20m
1 stop
$814Icelandair
Mon, Aug 17 - Wed, Sep 2
Multiple Airlines Logo
12:15 pm - 6:50 pm
FRA
-
DEN
14h 35m
1 stop
Multiple Airlines Logo
11:44 am - 9:10 am
DEN
-
FRA
13h 26m
1 stop
$815Multiple Airlines
Sun, Aug 30 - Sun, Sep 6
United Airlines Logo
12:15 pm - 6:50 pm
FRA
-
DEN
14h 35m
1 stop
United Airlines Logo
3:55 pm - 9:20 am
DEN
-
FRA
9h 25mnonstop
$834United Airlines
Wed, Aug 26 - Fri, Sep 4
United Airlines Logo
1:15 pm - 6:50 pm
FRA
-
DEN
13h 35m
1 stop
United Airlines Logo
12:40 pm - 9:10 am
DEN
-
FRA
12h 30m
1 stop
$834United Airlines
Booking Insights

KAYAK's insights & trends for Frankfurt am Main to Denver flights

Get data-powered insights and trends into flights from Frankfurt am Main to Denver to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Frankfurt am Main Airport to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Frankfurt am Main Airport to Denver departing in October.

Flight prices are below average for this route right now.

Flights to Denver from Frankfurt am Main Airport usually cost between $846 and $1,102 in October.
The lowest price found in the past 5 days was $812 on Lufthansa (Oct 1-Oct 19).

What’s the cheapest day of the week to fly from Frankfurt am Main to Denver?

The average price of all round-trip flights from Frankfurt am Main Airport to Denver clicked on KAYAK for each day over the last 12 months.

When flying from Frankfurt am Main to Denver, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Frankfurt am Main, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

What is the cheapest month to fly from Frankfurt am Main Airport to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Frankfurt am Main Airport to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Frankfurt am Main Airport to Denver is February, where tickets cost $820 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $1,151 and $1,007 respectively.

Can I save money by flying with a layover from Frankfurt am Main Airport to Denver?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $888, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Frankfurt am Main Airport to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Frankfurt am Main Airport to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Frankfurt am Main Airport to Denver, you should book around 2 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Expert advice

Expert advice for your flight from Frankfurt am Main to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Duncan Madden

Duncan Madden

Expert on FRA

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low season

January

Cheapest flight

$468
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Frankfurt am Main to Denver

When to book flights from Frankfurt am Main to Denver

Are your dates flexible? Find out the best times to travel from Frankfurt am Main to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Frankfurt am Main to Denver flights

  • What is the cheapest flight from Frankfurt am Main Airport to Denver?

    In the last 5 days, the lowest price for a flight from Frankfurt am Main Airport to Denver was $468 for a one-way ticket and $812 for a round-trip.

  • Do I need a passport to fly between Frankfurt am Main and Denver?

    Yes, you’ll need a passport to travel to Denver from Frankfurt am Main.

  • Which airports will I be using when flying from Frankfurt am Main to Denver?

    On your way to Denver, you’ll fly out from Frankfurt am Main. You’ll be landing at Denver Intl.

  • Which airlines offer Wi-Fi service onboard planes from Frankfurt am Main to Denver?

    All the following airlines offer inflight Wi-Fi service on the Frankfurt am Main to Denver flight route: Lufthansa, United Airlines, Brussels Airlines, Air Canada, Delta, and Austrian Airlines.

  • Which aircraft models fly most regularly from Frankfurt am Main to Denver?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Frankfurt am Main to Denver flight route.

  • Which airline alliances offer flights from Frankfurt am Main to Denver?

    Star Alliance is the only airline alliance operating flights between Frankfurt am Main and Denver.

  • On which days can I fly direct from Frankfurt am Main to Denver?

    There are nonstop flights from Frankfurt am Main to Denver on a daily basis.

  • Which is the best airline for flights from Frankfurt am Main to Denver, United Airlines or Icelandair?

    The two airlines most popular with KAYAK users for flights from Frankfurt am Main to Denver are United Airlines and Icelandair. With an average price for the route of $1,110 and an overall rating of 7.4, United Airlines is the most popular choice. Icelandair is also a great choice for the route, with an average price of $781 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Frankfurt am Main to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Frankfurt am Main to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Frankfurt am Main to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Frankfurt am Main is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Frankfurt am Main to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Frankfurt am Main with another airline. Booking your flights between Frankfurt am Main and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Frankfurt am Main to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Frankfurt am Main up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Frankfurt am Main Airport to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $1,084 or less one-way and $840 or less round-trip.

Prefer to fly direct from Frankfurt am Main to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Frankfurt am Main to Denver Intl.
Find which airlines fly direct from Frankfurt am Main Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Frankfurt am Main to Denver Intl

Monday

Lufthansa,United Airlines

Lufthansa,United Airlines

Tuesday

Lufthansa,United Airlines

Lufthansa,United Airlines

Wednesday

Lufthansa,United Airlines

Lufthansa,United Airlines

Thursday

Lufthansa,United Airlines

Lufthansa,United Airlines

Friday

Lufthansa,United Airlines

Lufthansa,United Airlines

Saturday

Lufthansa,United Airlines

Lufthansa,United Airlines

Sunday

Lufthansa,United Airlines

Lufthansa,United Airlines

See more direct flights

Direct returns

Denver Intl to Frankfurt am Main

Monday

Lufthansa,United Airlines

Lufthansa,United Airlines

Tuesday

Lufthansa,United Airlines

Lufthansa,United Airlines

Wednesday

Lufthansa,United Airlines

Lufthansa,United Airlines

Thursday

Lufthansa,United Airlines

Lufthansa,United Airlines

Friday

Lufthansa,United Airlines

Lufthansa,United Airlines

Saturday

Lufthansa,United Airlines

Lufthansa,United Airlines

Sunday

Lufthansa,United Airlines

Lufthansa,United Airlines

See more direct flights

Reviews of the top 3 airlines serving from Frankfurt am Main to Denver

 
See real verified KAYAK customer reviews for airlines flying from Frankfurt am Main to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Frankfurt am Main to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10063 reviews
8.1Crew
7.1Entertainment
7.3Comfort
7.7Boarding
6.7Food
Airline reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

2.0 MediocreJoseph, Jul 2026
PSP - DEN
Read more United Airlines reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

Lufthansa seats were much more comfortable than United. While they had about the same video selection, Lufthansa didn't put advertisements in with the movies like United did. And the Lufthansa food was much better than United.

We flew business fares. Was amazing. However, the check in didn't offer business fares preboarding which is less hectic. 8/10 due to this. Staff compared to Canadian carriers go above and beyond. Would gladly fly United again.

The staff was incredible, very attentive, polite, made you feel like the center of the universe. They even all wrote me a happy birthday card. Truly just an amazing crew, cannot stress it enough.

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

We love United Premium Plus! So comfortable without the cost of Polaris Club. The crew was so attentive and friendly!!

I have to wait for plane in Denver for three hours. I don’t receive my luggage in Denver. I come back home without the luggage and I wait till next day to see my luggage again. Not really good experience with United airlines. I’m sorry to say that.

Excellent as always. Had issues checking-in online. Please fix.

Everything about the flight was good. My one complaint would be that we were required to pay for a seat in order to select our seats before the flight. When I pay for a ticket I think the seat selection should be included.

Crew was wonderful and attentive. Chris (I think that was his name as I was seated in the back in 52F) was amazing and funny. The captain was informative and did everything to get us to Denver as close to on time as possible. Bags came quickly at baggage claim. Online check in would not allow me to change my seat 24 hours ahead of time with dozens of seats showing open and I really do not enjoy being in the back of the plane for long international flights.

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Terrible way of boarding in Reykjavik. Seats comfortable. Meal was good.

Unlike my prior three connections on this latest journey, this flight was fairly good. Only issue was boarding as it was once again one of those Icelandic issues of bunch up, walk in the rain to a bus that then has you run up three flights of stairs to board the plain. I was in Saga class but the bus scramble eliminates any chance you get on first and have to then find a place to squeeze your carry on into an overhead that the people in economy populate so they can grab it on their way out up front. But unlike other Icelandic flights this journey I did find more the of the business class like accommodations then the other air segments. This one found a pillow and blanket waiting for me and I actually received a small cup of sparkling wine and had a bottle of water in place. Service was attentive and the flight departed and arrived on time. Received a menu and had choices of a hot or cold meal. I choose the hot which was cod and it was good. Decent size portion, salad and a choice of dinner rolls. Beverage menu was a selection of wines, beer and soft drinks. Desert was a small Tiramisu. Overall the six hour flight was a good experience for the price point.

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

At least one soda free, felt like I was nickeled to death.

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

The most uncomfortable seat i’ve ever had on a flight

So Iceland Air is one step above Spirit Airlines. They do not feed you unless you pay for it or are in Saga Class. So, bring your food. They have a drink service, but it's in a large Dixie cup. Ask for the can, that is the only way you'll get a real drink. Also, we missed our connecting flight so they put us up in a flea-bag motel. Don't get me wrong, the staff was nice and friendly, however, there was no shower gel or shampoo in the hotel. We have to go to the corner store to pick some up. The room was not in great shape. Holes in the bathroom, a badly repaired ceiling in the room. The window was warn out. So, you get the just of how bad it was.

Lufthansa is turning into a budget airline. On transfers, the luggage never arrives if you have less than 2 hours for the transfer. This is happened to me multiple times when I end up on flights serviced by Lufthansa. The first leg of the flight was serviced by Discover Airlines. It was a 3-hour flight and they only offer a glass of water. Everything else is for purchase. I purchased my ticket as economy which should have included a bag but it ended up booking as economy light so I had to pay for a bag in each direction.

This flight went smoothly and the economy plus free upgrade worked very well.

The hot towels before the second meal was an unexpected surprise. The crew was attentive and personable, and that’s a lot on a nine hour flight. And the hot pretzels were a kind of “auf wiedersehn “ to Germany.

During the flight there was a medical emergency. We were diverted. Of course I'm thankful they cared for the health of that passenger, but they did a poor job of communicating with the rest of us passengers. In the end we arrived at our destination several hours late, with no direction of how to rebook missed connecting flights. It all worked out in the end. Those of us that needed accommodations were put up in a hotel by Lufthansa until we could make it to our final destination. But it was United Airlines Personnel who really helped us navigate the process.

I wrote about this leg of my itinerary in a previous part of this review

The flight attendants on this flight were incredible! One even gave me her own dinner when my special meal order wasn’t transferred due to a flight delay! She insisted and I was so grateful. That is going above and beyond! The issue I had with the flight was with Lufthansa support. I missed my connection due to a flight delay and they wouldn’t rebook online, only in person. This took a lot of time and visits to the airport waiting for a Lufthansa agent to arrive 5 hours later than posted and almost paying full-fare price for the new flights and refusal to add my special meal orders. It made for a challenging journey home and I didn’t feel valued as a customer.

Narrow, uncomfortable seats with metal structures under the seats that made it impossible to sit normally. You had to put your legs in oblique positions, causing pain in your spine and legs. This type of seats should only be allowed on short local flights of up to 2 hours, not on 10-hour intercontinental flights where you can hardly walk and go to the toilet due to lack of space. There is no question of short "walks" enabling circulation, due to lack of space. The plane's staff did not respond to calls and were engaged in long and loud conversations among themselves. They served only at assigned times to deliver meals. The entertainment system was not working properly and was hanging. The headphones didn't work properly either.

A 10.5 hour flight is always a challenge. Our economy plus section was relatively comfortable. Meals were above average with wine included gratis. A nice selection of movies was offered. Our flight delayed and arrived on time. There was ample storage for carry on luggage. Great overall.

The in flight display for entertainment was very bad. There was something wrong with the touch screen. Another passenger in the same row had a similar experience. The continuation of technical problems were quite disappointing. I paid extra money to choose to fly with this carrier and it was definitely not worth the cost. I would suggest to roll the dice with a different company.

I can't honestly describe this flight because my partner and I were unwillingly kicked off of it. We paid full price for our tickets and were confirmed and on time for our departure. However, we were not given seat assignments. When we went to the boarding gate to remedy us, the attendant literally shooed us away saying that the flight was overbooked and we were in standby. After boarding ended, we watched as people who were late for the flight were allowed to board. Then, all of the other standby passengers except my partner and I were permitted to board. As the plane departed the attendants repeatedly told us that "this is how airlines work"--which is to say they overbook us and our flight is not guaranteed. We were reimbursed a payment that wasn't even a quarter of what the flight originally cost us. We were also out up in a hotel room that we were told was downtown--it was 3 miles from the city center with no access to a nearby train. Today we were forced to go through security and passport check all over again for a flight we have been wait listed for. So we had to make this torturous trip back to the airport to hang in tedious uncertainty. I'm not sure when and if we will get home. I'm not sure how many times we will have to relive this airport check in and rebooking nightmare. Lufthansa is hands down the worst airline I have ever flown with and I would not recommend them to anyone.

Everything you need to know for your flight from Frankfurt am Main to Denver

Information on your arrival and departure airports