$323 Find Cheap Flights from Switzerland to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Denver departing on 1/12. 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.
1 adult
1 adult, Economy, 0 bags

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These are the airlines KAYAK users have selected most often from within our search results for flights to Denver
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Cheap Flights from Switzerland to Denver

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Switzerland 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 Switzerland to Denver

Sat, Nov 22 - Sun, Nov 23
United Airlines Logo
12:55 pm - 8:59 amGVA-DEN
28h 04m2 stops
United Airlines Logo
11:45 am - 11:40 amDEN-GVA
15h 55m2 stops
$540United Airlines
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Tue, Nov 25 - Sat, Nov 29
Icelandair Logo
1:00 pm - 6:05 pmZRH-DEN
13h 05m1 stop
Icelandair Logo
3:40 pm - 12:05 pmDEN-ZRH
12h 25m1 stop
$609Icelandair
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Tue, Nov 25 - Sat, Nov 29
Icelandair Logo
1:00 pm - 6:05 pmZRH-DEN
13h 05m1 stop
Icelandair Logo
3:40 pm - 12:05 pmDEN-ZRH
12h 25m1 stop
$610Icelandair
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Tue, Nov 25 - Sat, Nov 29
Lufthansa Logo
8:50 am - 4:00 pmZRH-DEN
15h 10m1 stop
Lufthansa Logo
4:20 pm - 12:55 pmDEN-ZRH
12h 35m1 stop
$677Lufthansa
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Sat, Dec 6 - Sun, Dec 14
British Airways Logo
7:05 am - 5:46 pmGVA-DEN
18h 41m2 stops
British Airways Logo
5:25 pm - 8:40 pmDEN-GVA
19h 15m1 stop
$686British Airways
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Wed, Jan 28 - Fri, Feb 20
British Airways Logo
12:35 pm - 3:30 pmZRH-DEN
34h 55m1 stop
British Airways Logo
12:15 pm - 12:30 pmDEN-ZRH
16h 15m2 stops
$688British Airways
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Thu, Apr 2 - Mon, Apr 6
American Airlines Logo
7:00 am - 4:35 pmGVA-DEN
17h 35m1 stop
American Airlines Logo
12:36 pm - 2:35 pmDEN-GVA
17h 59m2 stops
$691American Airlines
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Wed, Jan 7 - Sun, Jan 18
American Airlines Logo
8:50 pm - 3:30 pmGVA-DEN
26h 40m1 stop
American Airlines Logo
12:34 pm - 2:35 pmDEN-GVA
18h 01m2 stops
$692American Airlines
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Sat, Dec 6 - Thu, Jan 1
Lufthansa Logo
6:45 am - 1:40 pmGVA-DEN
14h 55m1 stop
Lufthansa Logo
4:20 pm - 8:35 amDEN-GVA
32h 15m1 stop
$766Lufthansa
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Thu, Nov 13 - Wed, Nov 26
SWISS Logo
8:15 pm - 8:04 pmGVA-DEN
31h 49m2 stops
SWISS Logo
5:35 pm - 5:05 pmDEN-GVA
15h 30m1 stop
$786SWISS
Find Deal

Everything you should know

When to travel
November
Cheapest • 16% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$540
Typical prices: $716-$843
United Airlines
Sat 11/22Sun 11/23
GVA - DEN • 2 stops
Cheapest one-way
$323
Overall average: $1,795
Multiple Airlines
Mon 1/12
GVA - DEN • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Booking Insights

KAYAK's insights & trends for flights to Denver

Get data-powered insights and trends for flights to Denver to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to Denver is November, where tickets cost $656 on average for one-way flights. On the other hand, the most expensive months are December and July, where the average cost of tickets from Switzerland is $932 and $865 respectively. For return trips, the best month to travel is November with an average price of $656.

How far in advance should I book a flight to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights 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, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 67 days before departure.

Good to know

Low seasonJanuary
Cheapest flight$323
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from Geneva to Denver

FAQs - booking Denver flights

  • How far is Denver Intl Airport from central Denver?

    The distance between Denver Intl Airport and downtown Denver is 18 miles.

  • What is the name of Denver’s airport?

    When flying to Denver, you'll arrive at Denver Intl Airport (DEN). The airport is also known as Denver or Denver Intl.

  • What is the cheapest day to fly to Denver?

    Based on KAYAK data, the cheapest day to fly to Denver is Thursday where tickets can be as cheap as $652. On the other hand, the most expensive day to fly is Wednesday, where prices are $885 on average.

  • How does KAYAK find such low prices on flights 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 to Denver.

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

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

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Denver?

    The cheapest time of day to fly to Denver is generally in the morning, when flights cost $684 on average. The most expensive time of day to fly to Denver is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $829.

  • How many direct flights to Denver are there each week?

    Each week there are around 7,590 direct flights from within Switzerland to Denver. The most common day for departures is Monday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Denver

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Denver flight deals.

Reviews of the top 5 airlines serving from Switzerland to Denver

 
See real verified KAYAK customer reviews for airlines flying to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Switzerland to Denver. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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.
7.5
SWISSOverall score based on 1774 reviews
6.8Entertainment
7.4Comfort
7.7Boarding
8.2Crew
7.1Food
Airline reviews

0lane 2qs on tim3. Very bad food. No free wifi, only for texts. Entertainment poor and hard to access.

4.0 OkayDavid M, Oct 2025ZRH - JFK
Read more SWISS reviews

0lane 2qs on tim3. Very bad food. No free wifi, only for texts. Entertainment poor and hard to access.

At boarding, the locations where we had to have our passports checked prior to boarding were very unclear. Occasional staff wandered around telling people, but in busy area of the terminal this was not obvious. It was also located well after the check in desk in terms of walking to the gate. The Premium Economy service was attentive and warm. The only big draw back was lack of restrooms, and no division or even curtain between PE and Economy.

We had seats between the bathroom and a screaming baby, and did not have enough room to lay my head down on the tray table. Not ideal.

Very nice crew and great food. Easy to board just wish the flight could be shorter or seats more comfortable or more room to walk around when you get cramps in your legs from sitting so long. Crew was great and attentive and really was good food.

Everything was fairly easy just hard when you get to Heathrow not know your Gate number until an hour before but otherwise really everything great. Did not get my texts in time though to do me any good but that is why I still like everything the old fashioned way and print everything out.

My experience was wonderful. The professionalism of the crew was exemplary 🙂. The meals were wholesome and tasty. I have no complaints

Everything was smooth and great. I didnt like that they talk so much on the interphone during the flight.

Even though I paid extra for more room, we were very cramped and the seats were hard. Also, when we checked in they did not post the gate we were to arrive at even though we were half an hour away from boarding. The agent did not know either. Actually, the flight from Porto to Zurich did to have the gate posted, and there were very few agents in the boarding areas who could help us. I would never fly Swiss Air again.

Horrible flight. First delay in boarding of approximately 30 minutes. While in the plane, the flight attendants huddle and we get an announcement that the crew's legal time was exceeded, that they don't have replacement crew and that they will need to cancel the flight. One would think that they would know that their time was to be exceeded BEFORE boarding. Took for ever to deplane. Then we were told that flight would not be cancelled but gave us a departure time of 21.15, which of course was not fulfilled. Arrived in Valencia, luggage took 30 minutes to arrive. Absolutely unacceptable

Swiss is the. Only airline I use when I go to Europe. They are on time and they are fantastic!

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

It was good. The air plane is clean and staff were friendly.

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

The crew was wonderful at check in, the gate and on board. Felt the luggage had more room than the passengers. The seats were smaller than most domestic U.S. airlines. I'm only 5'2" and I had little legroom. There were only 2 bathrooms in coach. Needed more. The flight was very smooth but not the most comfortable.

There was no lounge at Boston for us to use. Typically flying first class overseas comes with lounge privileges. The seats did not recline even a little. My headset only worked on one side. I felt like I was flying on Ryan Air, not Icelandic Air.

Boarded with no problems. Sat on the tarmac for an hour before taking off. We were the last ones on our connecting flight. Didn't think we were going to make it. Our flight to Iceland was similarly delayed. When we've flown other airlines, pilots have tried to make up time while in the air. This doesn't seem to be something that Icelandair does. We made all of our flights, but it was stressful and we didn't think it was going to happen based on the time we arrived.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

We would have missed our connection from Munich to Boston but we had a van outside the plan that wisked us to our terminal. Much appreciated and we didn’t even realize that Lufthansa had done this until the announcement on disembarkation. Well organized airline! Will definitely fly Lufthansa again!!!

Everything went well. I will fly with Lufthansa again. And use Kayak whenever I book flights

Bought a seat in a flight that got changed out so ended up paying for a seat I would have had if I hadn't paid.

Food was poor quality and the screens for entertainment didn’t work properly

Food was much better than my outbound flight. On-time. Good service. I had a problem with my entertainment screen, but the attendant fixed it promptly.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

United lost my travel information and canceled my original flight. I had a seat assignment but was refused the booking. I had to prove that I went to Germany on United Very concerned about security that no one recorded my passport from Cleveland to NY and NY to Frankfurt I arrived at home at 12:30am on Saturday instead of 8pm I expect a full refund from United Please provide information to assure compensation

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

There might be more food options for people who can't eat so much starch/sugar/bread/rice. Meat, cheese, walnuts/pecans for snack, maybe jerky or other kinds of meat-based snacks would be better than bread and rice and sweets. I had an extra chardonnay, which was fine. The entertainment was great.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

Crew service was poor and very little difference between premium economy and economy. Disappointed.

My bags never made it on the flight and I now have to wait for them to arrive hopefully tomorrow. You can’t even track your bags in the app to see where they are since they didn’t arrive. You have to file a claim and then wait for them to inform you when you will receive your bag. We were already delayed for an hour due to baggage so I don’t understand how my bag didn’t make the flight.

One of the worst experience given the middle seat even asked for the change no one honored,boarded at the end and overall one of the worst experience

It was good although our flight to the UK was cancelled and rescheduled for two days later. This was after we were already seated on the plane. We missed the first leg of our trip. BA did put us up at a hotel and paid for our meals but we lost our hotel costs in Glasgow.

The crew was very nice and pleasant. We were very reluctant to book our flight with British Airlines because we had bad experience with their flight attendants on the previous trips, they were rude and not helpful.

I am a 25+ years American Airlines member. British Airways is simply above and beyond in every customer satisfaction category.

The seat pads are past there sell by date now and are uncomfotable. Also, with screens in the back of the seat, the seats shouldnt be able to recline as this puts rhe screen in your face.

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