DEN - HEL

$344 Find Cheap Flights from Denver to Helsinki

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Helsinki departing on 1/15. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Helsinki

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Helsinki.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Helsinki.
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Everything you should know

Cheapest round-trip
$363
Overall average: $651
Icelandair
Thu 12/4Thu 12/11
DEN - HEL • 1 stop
Cheapest one-way
$344
Typical prices: $308-$587
Multiple Airlines
Thu 1/15
DEN - HEL • 1 stop
Top airlines
Icelandair
Cheapest • from $363 (round-trip)
Finnair
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 16% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 22% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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 Helsinki!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Helsinki (DEN-HEL)

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

Thu, Dec 4 - Thu, Dec 11
Icelandair Logo
3:40 pm - 12:55 pmDEN-HEL
12h 15m1 stop
Icelandair Logo
1:55 pm - 6:05 pmHEL-DEN
13h 10m1 stop
$363Icelandair
Find Deal
Thu, Dec 4 - Thu, Dec 11
Icelandair Logo
3:40 pm - 12:55 pmDEN-HEL
12h 15m1 stop
Icelandair Logo
1:55 pm - 6:05 pmHEL-DEN
13h 10m1 stop
$390Icelandair
Find Deal
Tue, Apr 14 - Fri, Apr 24
Icelandair Logo
4:40 pm - 2:00 pmDEN-HEL
12h 20m1 stop
Icelandair Logo
3:00 pm - 6:55 pmHEL-DEN
12h 55m1 stop
$422Icelandair
Find Deal
Mon, Apr 13 - Wed, Apr 22
Icelandair Logo
4:40 pm - 2:00 pmDEN-HEL
12h 20m1 stop
Icelandair Logo
3:00 pm - 6:55 pmHEL-DEN
12h 55m1 stop
$445Icelandair
Find Deal
Thu, Dec 4 - Thu, Dec 11
Lufthansa Logo
5:45 pm - 1:20 amDEN-HEL
22h 35m1 stop
Lufthansa Logo
6:55 am - 4:00 pmHEL-DEN
18h 05m1 stop
$449Lufthansa
Find Deal
Thu, Jan 8 - Thu, Jan 15
Multiple Airlines Logo
4:20 pm - 6:50 pmDEN-HEL
17h 30m1 stop
Multiple Airlines Logo
1:55 pm - 10:23 amHEL-DEN
29h 28m2 stops
$468Multiple Airlines
Find Deal
Tue, Jan 20 - Sun, Jan 25
Multiple Airlines Logo
7:50 am - 10:45 amDEN-HEL
17h 55m1 stop
Multiple Airlines Logo
12:30 pm - 6:13 pmHEL-DEN
14h 43m1 stop
$474Multiple Airlines
Find Deal
Tue, Jan 20 - Sun, Jan 25
Air Canada Logo
1:25 pm - 1:10 pmDEN-HEL
38h 45m2 stops
Air Canada Logo
12:45 pm - 7:55 pmHEL-DEN
40h 10m2 stops
$476Air Canada
Find Deal
Sat, Feb 14 - Tue, Feb 24
Lufthansa Logo
4:20 pm - 6:50 pmDEN-HEL
17h 30m1 stop
Lufthansa Logo
7:05 am - 4:00 pmHEL-DEN
17h 55m1 stop
$477Lufthansa
Find Deal
Mon, Apr 27 - Mon, May 4
Air Canada Logo
11:05 am - 7:00 pmDEN-HEL
22h 55m2 stops
Air Canada Logo
7:05 am - 6:20 pmHEL-DEN
20h 15m2 stops
$480Air Canada
Find Deal
Booking Insights

KAYAK's insights & trends for Denver to Helsinki flights

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

What’s the cheapest day of the week to fly from Denver to Helsinki?

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

When flying from Denver to Helsinki, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Fridays and the most expensive ones on Saturdays.

What is the cheapest month to fly from Denver to Helsinki?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Helsinki, 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 Denver to Helsinki is March, where tickets cost $493 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $949 and $874 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Helsinki, 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 Denver to Helsinki, you should book around 4 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$344
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly with an average 37% increase in price.
Flight from Denver to Helsinki

When to book flights from Denver to Helsinki

Are your dates flexible? Find out the best times to travel from Denver to Helsinki 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 flights from Denver to Helsinki

  • What are the transport options from Helsinki Airport to downtown?

    I and P trains of Finish Railways VR connect Lentoasema of HEL Airport to downtown Helsinki. The trains operate every 5 minutes. Bus Lines 600 and 415N of Helsingin Seudun Liikenne link HEL Airport to downtown HEL and operate every 15 minutes. Bus Line, v130 of Onni Bus connects HEL Airport to downtown Helsinki and operates once daily.

  • What are some layover cities for flights from Denver to Helsinki?

    All flights from DEN to HEL have layovers en route. Some of the common layover cities include Reykjavik (KEF) by Icelandair, Munich (MUC) by Lufthansa and United, Chicago (ORD) by British, Dallas (DFW) by American, Frontier and Finnair, and London (LHR) by Lufthansa.

  • Can a minor fly unaccompanied from Denver to Helsinki?

    Your minor, aged 5 to 14, can travel alone with United from DEN to HEL for a fee. You must escort your minor to the airport at least 2hr 30min before departure. You must provide the minor's birth certificate for age verification alongside the passport. You must also provide your phone number and photo ID as well as the receiving adult's name, phone number, photo, and address.

  • Which airlines offer accessible services from Denver to Helsinki?

    American Airlines offer people with special needs traveling from DEN to HEL accessible services. The airline offer wheelchair assistance to those with reduced mobility during navigation, boarding, and deplaning. They also have mobility aid equipment onboard, such as wheelchairs, walkers, and crutches. They offer services such as priority boarding and spacious seating options for these people.

  • What is the cheapest flight from Denver to Helsinki?

    In the last 3 days, the lowest price for a flight from Denver to Helsinki was $344 for a one-way ticket and $363 for a round-trip.

  • Do I need a passport to fly between Denver and Helsinki?

    Yes

  • Which aircraft models fly most regularly from Denver to Helsinki?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Helsinki?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Denver and Helsinki, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Denver to Helsinki, Delta or Finnair?

    The two airlines most popular with KAYAK users for flights from Denver to Helsinki are Delta and Finnair. With an average price for the route of $651 and an overall rating of 7.9, Delta is the most popular choice. Finnair is also a great choice for the route, with an average price of $661 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Denver to Helsinki?

    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 Denver to Helsinki.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helsinki from 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 from Denver to Helsinki?

    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 Helsinki with an airline and back to Denver with another airline. Booking your flights between Denver and HEL 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 Denver to Helsinki?

    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 Helsinki from Denver 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 Denver to Helsinki

  • Lufthansa Airline can offer special meals personalized to meet your dietary requirements and preferences if you travel from Denver International Airport (DEN) to Helsinki-Vantaa International Airport (HEL). They include diabetic, vegan, religion- or culture-specific, vegetarian, gluten- or lactose-free, and low-fat meals.
  • If you fly with British Airlines, you can travel with a carry-on bag and a personal item from DEN to HEL. The airline allows a maximum weight of 50.71 lb for your carry-on bag with maximum dimensions of 22 x 17 x 9.8 inches. The dimensions of your personal items must not exceed 15 x 11.8 x 5.9 inches.
  • If you fly with Lufthansa from DEN to HEL, you can travel with your pet. Your pet should be in a small transport bag that must fit under a seat with maximum dimensions of 22 x 16 x 9 inches. It should also be comfortable for your pet, and its combined weight with your pet must not exceed 17 lb.
  • You remain stress-free when you travel with your child from DEN to HEL with Icelandair. The airline has various family-friendly services, allowing you to board with your FAA-approved child restraint system. They also offer child-friendly meals, priority boarding if you have a child and lavatories with changing tables.
  • You can book Business- and First-class flights with American Airlines from DEN to HEL. These passengers can access their American Airlines Admirals Club at Concourse A on the Airside of DEN Airport and enjoy increased baggage allowance and premium dining options.

Reviews of the top 5 airlines serving from Denver to Helsinki

 
See real verified KAYAK customer reviews for airlines flying from Denver to Helsinki. 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 Denver to Helsinki? 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.
7.6
FinnairOverall score based on 1335 reviews
7.6Boarding
6.9Entertainment
6.7Food
7.4Comfort
8.1Crew
Airline reviews

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

8.0 ExcellentDavid, Oct 2025LHR - BWI
Read more Finnair reviews

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Flight was good but there are way to many announcements for credit cards etc.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

We were very rushed by a staff member at the gate when transferring from American Airlines to Fijian. Then the plane stayed put for ages anyhow! The plane was delayed and my bag sent to San Francisco instead of Fiji

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

We loved the steward on the plane. He made the night enjoyable

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

It was too cold in the plane my feet froze

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.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

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.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

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.

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

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

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

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

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

Everything you need to know for your flight from Denver to Helsinki

Information on your arrival and departure airports