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

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Good to Know

Low Season:
January
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
17%
expected price increase
Average Price:
$1165
(avg. price over the last 2 weeks)
Good Deal:
$798
or less (round trip)

When to Book Flights from Frankfurt am Main to Denver International

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $798 or less.
The cheapest flight from Frankfurt am Main to Denver International was found 86 days before departure, on average.
Book at least 4 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is January.
Morning departure is around 95% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Frankfurt am Main to Denver International Flights

How long does a flight from Frankfurt am Main to Denver International take?
An average nonstop flight takes 12h 30m, covering a distance of 5026 miles.
How many flights are there between Frankfurt am Main and Denver International?
There are 36 (nonstop) flights between Frankfurt am Main and Denver International per week, averaging 6 per day.
Which airlines provide the cheapest flights from Frankfurt am Main to Denver International?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($551), Icelandair ($638) and British Airways ($665).
Do I need a passport to fly between Frankfurt am Main and Denver International?
Yes.
Which airlines fly most frequently between Frankfurt am Main and Denver International?
Air India (1 times daily), Lufthansa (1 times daily), United (1 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Frankfurt am Main to Denver International?
For Frankfurt am Main to Denver International, Wednesday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Denver International back to Frankfurt am Main, the best deals are generally found on Wednesday, with Sunday being the most expensive.

Book cheap flights from Frankfurt am Main to Denver International (round-trip)

Airports
Origin
Frankfurt am Main
$551
only
$551
Destination
Denver
$551
only
$551
Wed, Dec 13
FRA
DEN
53h 47m
Tue, Jan 16
DEN
FRA
40h 40m
Trip: 35 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 1
FRA
DEN
12h 30m
Mon, Mar 19
DEN
FRA
11h 50m
Trip: 18 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6270 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
JFK
Excellent 10.0

On time, comfortable, smooth and easy flights

Everything was fine no complaints

BOS
KEF
Good 7.6

Still a cattle car in coach

Way too cramped for seating, but the are all the same.

KEF
SEA
Good 6.0

The entertainment portion was the biggest positive. Crew was pleasant and non invasive.

Not offering any sort of complimentary food on a 7 hour flight isn't ok. Not being transparent about not offering any sort of food is worse. Boarding was confusing with separate lines, scanning our tickets, herding us into a room, then directing us to go upstairs, then over a ramp, then into our plane without any sort of efficient zone boarding.

YEG
KEF
Good 7.0

I liked the northern light atmosphere lights and the individual entertainment option.

My economy seat was a bit snug for an average built Person. I am used to being offered some kind of snack, but there is a menu with food and drinks you can choose from for a fee.

KEF
IAD
Mediocre 3.6

I made it home with my luggage.

Absolutely chaos boarding, seats way to close together in both width and length. They had open seats with more room, told me I couldn’t move seats but let others. Each leg of the flight the pilots landed like the plane fell out of the sky! The crew was yet again nowhere to be found during the flight. They do offer food for sale during the flight but it’s at outrageous Icelandic prices!! Never again!!!

Thu, May 10
FRA
DEN
14h 42m
Thu, May 24
DEN
FRA
13h 00m
Trip: 15 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13470 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
PHX
Good 7.0

Wheelchair was not provided at London and Phoenix locations.

ATH
LHR
Okay 5.0

Not much.

Pay for food on BA? They didn't even offer free water.

SEA
LHR
Okay 4.0

The flight was cancelled, it was very difficult for me to do all rearrangements.

LOS
LHR
Excellent 10.0

On time

DFW
LHR
Excellent 9.3

Food, service, friendly, helpful Cabin crew made it a very positive experience

Entertainment system is really ancient, it's lagging other airlines in terms of display size & quality, user interface and programming

Tue, Dec 19
FRA
DEN
20h 31m
Sat, Dec 30
DEN
FRA
15h 00m
Trip: 12 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 13693 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
PTY
ATL
Excellent 9.6

Crew was kind, entertainment and food were good

Seats are really tight

ATL
HPN
Good 7.3

It was on time

It was crowded and cramped.

LAX
HNL
Okay 5.0

The gentleman at the gate was super helpful and helped us check our bags at the gate.

Zero leg room. Zero arm room. The entertainment system did not function. No food for such a long flight unless you pay more then the food is actually worth.

JFK
CUN
Excellent 9.0

Entertainment and crew were great- comfortable seats, got to watch a couple of movies with headphones provided by Delta; forgot mine so I assumed I would be miserable thru the whole 4 hour flight. so glad I was wrong! Would definitely take another flight with Delta... looking into the frequent flyer program as we speak

SAV
ATL
Good 7.0

The flight was on schedule

It was crowded and cramped.

Wed, Dec 13
FRA
DEN
53h 47m
Wed, Jan 31
DEN
FRA
23h 56m
Trip: 50 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Feb 4
FRA
DEN
13h 00m
Sun, Feb 25
DEN
FRA
11h 50m
Trip: 22 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6270 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
BOS
Mediocre 2.0

Iceland Air itself is fine.

I had to buy the tickets through JustFly, which is an absolute scam and bilked me out of $750.

BRU
KEF
Good 6.0

Second time I have flown to Brussels with Iceland Air. I love their customer service and especially the flight route. My flight going over was cancelled due to weather. I called their reservation office , had to wait on hold for 1 hour and 15 minutes , but it was worth it. The reservation agent found me a new flight on LH, she explained I would get a conformation about 3 hours after our conversation with the flight information and new txt information. I was able to check in with LH on line that evening. Iceland Air had every pre assigned seats for me.

The boarding process in Kevlavik is pretty awful. No seating around gate areas. You have to stand in line for about 30 minutes to then have to get on shuttle to be driven to plane where you have to walk on stairs to get to plane, or in some cases you actually get to board from the terminal, which happened yesterday. I have MS,and sometimes standing for long periods of time and then having to climb up stairs is difficult for me. I also see a lot of elderly people and parents with babies having difficulty with this boarding process. Their airport really needs major expansion for the amount of people that travel thru their. Seating araes around their gates should be a priority.

LGW
KEF
Good 6.0

The lights in the cabin were great set up to look like the Aurora

Offered 1 drink and no snack. Rarely do you see the crew on their flights

KEF
JFK
Excellent 10.0

On time, comfortable, smooth and easy flights

Everything was fine no complaints

KEF
IAD
Mediocre 3.6

I made it home with my luggage.

Absolutely chaos boarding, seats way to close together in both width and length. They had open seats with more room, told me I couldn’t move seats but let others. Each leg of the flight the pilots landed like the plane fell out of the sky! The crew was yet again nowhere to be found during the flight. They do offer food for sale during the flight but it’s at outrageous Icelandic prices!! Never again!!!

Thu, Feb 8
FRA
DEN
42h 39m
Sun, Feb 18
DEN
FRA
38h 00m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 18
FRA
DEN
14h 42m
Mon, Apr 30
DEN
FRA
13h 00m
Trip: 13 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13470 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
CDG
Good 6.0

You charged me for coffe after flying all night

LOS
LHR
Excellent 10.0

On time

LHR
SJC
Good 6.3

delay too long

ATH
LHR
Okay 5.0

Not much.

Pay for food on BA? They didn't even offer free water.

TLV
LHR
Good 6.0

The new flight procedures informational film at the beginning of the flight (BA/Comic Relief)

The flight was to Heathrow which was not prepared to accept us at all. We waited 45 minutes in passport control. I expect BA to make sure the port of destination is prepared to receive its passengers

Wed, Dec 13
FRA
DEN
53h 47m
Mon, Jan 15
DEN
FRA
21h 56m
Trip: 34 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 14
FRA
DEN
14h 42m
Mon, May 28
DEN
FRA
13h 00m
Trip: 15 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13470 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
SJC
Good 6.3

delay too long

ATH
LHR
Okay 5.0

Not much.

Pay for food on BA? They didn't even offer free water.

TLV
LHR
Good 6.0

The new flight procedures informational film at the beginning of the flight (BA/Comic Relief)

The flight was to Heathrow which was not prepared to accept us at all. We waited 45 minutes in passport control. I expect BA to make sure the port of destination is prepared to receive its passengers

SFO
LHR
Excellent 10.0

Everything

LHR
PHX
Good 7.0

Wheelchair was not provided at London and Phoenix locations.

Tue, Mar 13
FRA
DEN
12h 40m
Sat, Mar 31
DEN
FRA
11h 30m
Trip: 19 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6270 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
JFK
Excellent 10.0

On time, comfortable, smooth and easy flights

Everything was fine no complaints

LGW
KEF
Good 6.0

The lights in the cabin were great set up to look like the Aurora

Offered 1 drink and no snack. Rarely do you see the crew on their flights

JFK
KEF
Excellent 8.0

Crew was very nice

No spirits unless you buy. Bring food or you ll starve

KEF
SEA
Mediocre 3.3

Entertainment system appeared to be average, although I didn't use it.

Terrible legroom. Expensive meals and drinks for international flight. Very long line for boarding - waited in line nearly an hour.

KEF
BOS
Mediocre 2.0

Iceland Air itself is fine.

I had to buy the tickets through JustFly, which is an absolute scam and bilked me out of $750.

Wed, Dec 13
FRA
DEN
53h 47m
Sun, Jan 14
DEN
FRA
31h 55m
Trip: 33 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 16
FRA
DEN
14h 42m
Wed, May 30
DEN
FRA
13h 00m
Trip: 15 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13470 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
IAD
Excellent 8.3

Crew was very friendly and helpful when needed. Excellent choice of movies/entertainment (for my personal taste). Overall a pleasant, smooth 7 hour flight.

Food was as decent as an airline meal can get. Seats were as comfortable as an economy class seat can get.

LHR
SJC
Good 6.3

delay too long

SFO
LHR
Excellent 10.0

Everything

DFW
LHR
Excellent 9.3

Food, service, friendly, helpful Cabin crew made it a very positive experience

Entertainment system is really ancient, it's lagging other airlines in terms of display size & quality, user interface and programming

LIN
LHR
Excellent 10.0

excellent, efficient, clean, professional

partnering with American Airlines is a crime and an offense.

Tue, Dec 19
FRA
DEN
20h 31m
Fri, Dec 29
DEN
FRA
15h 00m
Trip: 11 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 13693 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
LAX
HNL
Okay 5.0

The gentleman at the gate was super helpful and helped us check our bags at the gate.

Zero leg room. Zero arm room. The entertainment system did not function. No food for such a long flight unless you pay more then the food is actually worth.

AMS
YYZ
Excellent 8.3

The flight attendant named Steven went so far beyond the call. He was attentive, he fixed our video system when no one else could and when he learned we were celebrating an anniversary he brought us a present. He was awesome!

JFK
CUN
Excellent 9.0

Entertainment and crew were great- comfortable seats, got to watch a couple of movies with headphones provided by Delta; forgot mine so I assumed I would be miserable thru the whole 4 hour flight. so glad I was wrong! Would definitely take another flight with Delta... looking into the frequent flyer program as we speak

OMA
ATL
Good 7.6

My comfort zone seat

SAV
ATL
Good 7.0

The flight was on schedule

It was crowded and cramped.

Thu, Mar 29
FRA
DEN
12h 35m
Fri, Apr 20
DEN
FRA
11h 30m
Trip: 23 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6270 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
BOS
Mediocre 2.0

Iceland Air itself is fine.

I had to buy the tickets through JustFly, which is an absolute scam and bilked me out of $750.

YEG
KEF
Good 7.0

I liked the northern light atmosphere lights and the individual entertainment option.

My economy seat was a bit snug for an average built Person. I am used to being offered some kind of snack, but there is a menu with food and drinks you can choose from for a fee.

KEF
JFK
Excellent 10.0

On time, comfortable, smooth and easy flights

Everything was fine no complaints

BOS
KEF
Good 7.6

Still a cattle car in coach

Way too cramped for seating, but the are all the same.

LGW
KEF
Excellent 8.3

After a long journey overall, it was nice to have an easy plane ride to Iceland!

N/A

Thu, May 3
FRA
DEN
42h 34m
Mon, Jun 11
DEN
FRA
20h 30m
Trip: 40 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Mar 10
FRA
DEN
12h 40m
Sat, Mar 24
DEN
FRA
11h 40m
Trip: 14 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6270 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
YEG
KEF
Good 7.0

I liked the northern light atmosphere lights and the individual entertainment option.

My economy seat was a bit snug for an average built Person. I am used to being offered some kind of snack, but there is a menu with food and drinks you can choose from for a fee.

KEF
SEA
Good 6.0

The entertainment portion was the biggest positive. Crew was pleasant and non invasive.

Not offering any sort of complimentary food on a 7 hour flight isn't ok. Not being transparent about not offering any sort of food is worse. Boarding was confusing with separate lines, scanning our tickets, herding us into a room, then directing us to go upstairs, then over a ramp, then into our plane without any sort of efficient zone boarding.

BOS
KEF
Good 7.6

Still a cattle car in coach

Way too cramped for seating, but the are all the same.

KEF
IAD
Mediocre 3.6

I made it home with my luggage.

Absolutely chaos boarding, seats way to close together in both width and length. They had open seats with more room, told me I couldn’t move seats but let others. Each leg of the flight the pilots landed like the plane fell out of the sky! The crew was yet again nowhere to be found during the flight. They do offer food for sale during the flight but it’s at outrageous Icelandic prices!! Never again!!!

BOS
KEF
Good 6.6

Service of staff was sub par compared to other airlines serving Germany

Mon, Mar 5
FRA
DEN
35h 54m
Sun, Apr 1
DEN
FRA
11h 30m
Trip: 27 days
Overall 0.0 Poor
Based on 0 reviews
Sat, May 19
FRA
DEN
14h 42m
Thu, May 31
DEN
FRA
20h 10m
Trip: 13 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13470 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
SEA
LHR
Okay 4.0

The flight was cancelled, it was very difficult for me to do all rearrangements.

LHR
SJC
Good 6.3

delay too long

LHR
PHX
Good 7.0

Wheelchair was not provided at London and Phoenix locations.

LHR
IAD
Excellent 8.3

Crew was very friendly and helpful when needed. Excellent choice of movies/entertainment (for my personal taste). Overall a pleasant, smooth 7 hour flight.

Food was as decent as an airline meal can get. Seats were as comfortable as an economy class seat can get.

LIN
LHR
Excellent 10.0

excellent, efficient, clean, professional

partnering with American Airlines is a crime and an offense.

Thu, Mar 22
FRA
DEN
12h 30m
Fri, Mar 30
DEN
FRA
11h 30m
Trip: 9 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6270 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
SEA
Mediocre 3.3

Entertainment system appeared to be average, although I didn't use it.

Terrible legroom. Expensive meals and drinks for international flight. Very long line for boarding - waited in line nearly an hour.

KEF
BOS
Mediocre 2.0

Iceland Air itself is fine.

I had to buy the tickets through JustFly, which is an absolute scam and bilked me out of $750.

KEF
SEA
Good 6.0

The entertainment portion was the biggest positive. Crew was pleasant and non invasive.

Not offering any sort of complimentary food on a 7 hour flight isn't ok. Not being transparent about not offering any sort of food is worse. Boarding was confusing with separate lines, scanning our tickets, herding us into a room, then directing us to go upstairs, then over a ramp, then into our plane without any sort of efficient zone boarding.

KEF
IAD
Mediocre 3.6

I made it home with my luggage.

Absolutely chaos boarding, seats way to close together in both width and length. They had open seats with more room, told me I couldn’t move seats but let others. Each leg of the flight the pilots landed like the plane fell out of the sky! The crew was yet again nowhere to be found during the flight. They do offer food for sale during the flight but it’s at outrageous Icelandic prices!! Never again!!!

BOS
KEF
Good 6.6

Service of staff was sub par compared to other airlines serving Germany

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