S$ 728 Find Cheap Flights from Southeast Asia 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 to Denver departing on 17-11. 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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Cheap Flights from Southeast Asia to Denver

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Southeast Asia 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 return flight deals from Southeast Asia to Denver

Sat, 22 Aug - Fri, 4 Sep
Air Canada Logo
07:00 - 23:52
SIN
-
DEN
30h 52m
1 stop
Air Canada Logo
09:10 - 05:15
DEN
-
SIN
30h 05m
1 stop
S$ 1,161Air Canada
Sat, 22 Aug - Fri, 4 Sep
Air Canada Logo
07:00 - 23:52
SIN
-
DEN
30h 52m
1 stop
Air Canada Logo
09:10 - 05:15
DEN
-
SIN
30h 05m
1 stop
S$ 1,170Air Canada
Sat, 22 Aug - Fri, 4 Sep
Multiple Airlines Logo
07:00 - 23:52
SIN
-
DEN
30h 52m
1 stop
Multiple Airlines Logo
19:45 - 11:45
DEN
-
SIN
26h 00m
2 stops
S$ 1,235Multiple Airlines
Sat, 22 Aug - Fri, 4 Sep
Multiple Airlines Logo
07:00 - 23:52
SIN
-
DEN
30h 52m
1 stop
Multiple Airlines Logo
19:45 - 11:45
DEN
-
SIN
26h 00m
2 stops
S$ 1,260Multiple Airlines
Sat, 22 Aug - Fri, 4 Sep
Delta Logo
22:00 - 23:58
SIN
-
DEN
39h 58m
2 stops
Delta Logo
06:00 - 23:55
DEN
-
SIN
27h 55m
2 stops
S$ 1,285Delta
Tue, 18 Aug - Sat, 22 Aug
Delta Logo
22:00 - 23:58
SIN
-
DEN
39h 58m
2 stops
Delta Logo
07:05 - 23:55
DEN
-
SIN
26h 50m
2 stops
S$ 1,287Delta
Tue, 18 Aug - Sat, 22 Aug
Air Canada Logo
07:00 - 17:13
SIN
-
DEN
24h 13m
1 stop
Air Canada Logo
21:09 - 05:15
DEN
-
SIN
42h 06m
2 stops
S$ 1,322Air Canada
Tue, 18 Aug - Sat, 22 Aug
Air Canada Logo
07:00 - 17:13
SIN
-
DEN
24h 13m
1 stop
Air Canada Logo
09:10 - 14:30
DEN
-
SIN
39h 20m
2 stops
S$ 1,365Air Canada
Sun, 20 Dec - Fri, 8 Jan
Air Canada Logo
08:40 - 18:04
SIN
-
DEN
48h 24m
2 stops
Air Canada Logo
08:15 - 07:00
DEN
-
SIN
31h 45m
1 stop
S$ 1,368Air Canada
Tue, 18 Aug - Sat, 22 Aug
Air Canada Logo
07:00 - 23:52
SIN
-
DEN
30h 52m
1 stop
Air Canada Logo
20:56 - 05:15
DEN
-
SIN
42h 19m
1 stop
S$ 1,420Air Canada
Useful Info

Good to know

Low season

January

Cheapest flight

S$ 728
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly (8% more expensive on average)
Flight from Singapore to Denver

FAQs for booking flights from Southeast Asia to Denver

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Denver with an airline and back to Southeast Asia with another airline.

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

Reviews of the top airlines flying from Southeast Asia to Denver

 
Need help choosing which airline to fly with from Southeast Asia 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 10010 reviews
7.7Boarding
7.3Comfort
8.1Crew
7.1Entertainment
6.7Food
Airline reviews

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.

2.0 MediocreAnonymous, Jul 2026
FCO - DEN
Read more United Airlines reviews

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.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

Another good flight experience with Air Canada. The business section did not feature the full length sleeping arrangement, but this was a shorter trip. The food was excellent. But the flight crew was truly top tier: friendly, cheerful, helpful at all the right times. Air Canada truly outshines all U.S. carriers.

Wifi was great. Kind air crew and comfortable seating. Also liked the entertainment options.

I did not noticed baggage was separate - I had assumed international flights included luggage, so it surprised me I had to pay to check a bag.

In a nutshell, my bag, the one I have to pay for, because now you can’t even bring a carry on, did not make it. I am still waiting for an update. The fact that not only were have to pay for it, but on top of that we are stuck without getting it, it’s ridiculous..

flight landed late almost 1.00hr and we 4 passengers missed our connected flight to indianapolis, we need to get the hotel and taxi for the next day flight to home in indianapolis, cost us $ 300 more

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Staff was friendly helpful also good timing I rate it a 10 out of 10

The only issues I have are the seats are very small and so is the overhead storage. You should mention that while booking flights. I had plenty of knee room but I am wider than my seat, and I am not fat at all. The Mitsubishi 900 models need to be upgraded to western size people. I do not know how a 300 pound woman fit into those seats. I had to continuously lean away from the aisle to keep people and flight crew from bumping into my shoulder. 3 hour flight so no entertainment or food, just snacks and a drink, which was no big deal. The buttery/garlic pretzels were pretty tasty.

I was overcharged either by United or sister airline Air Canada. It's exhausting dealing with companies nowadays that irresponsibly abuse access to credit/debit cards.

The flight attendants that assisted me were exceptionally nice, kind and helpful

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