Find cheap flights from Colorado to Kathmandu

KTM

Find cheap flights from Colorado to Kathmandu

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Boston (BOS)
Kathmandu Tribhuvan
Fri 10/30
Fri 11/6
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Travel restrictions
Nepal has lifted the suspension of international commercial flights. However, only Nepalis, international passengers from certain employment categories, and their dependents are allowed to enter. Travelers must present a medical certificate with a negative Coronavirus (COVID-19) PCR issued within 72 hours before departure. Learn more
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Good to know

Low season

May Best time to beat the crowds with an average 3% drop in price.

High season

June Most popular time to fly with an average 8% increase in price.

Average price of a round-trip

$1,164 (avg. price over the last 2 weeks)

Good deal for a round-trip

$515 or less

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Top 3 airlines serving Colorado to Kathmandu Tribhuvan

Scores according to KAYAK customer reviews

8.6
Singapore Airlines
Overall score based on 3,882 reviews
8.8
Boarding
8.5
Comfort
8.9
Crew
8.6
Entertainment
8.3
Food
Airline reviews

Pros: "Just ok"
Cons: "The crew and the service"

Pros: "Three of us were sitting separately. Airline is able to accommodate us so that we get to sit together in a section where there is extra leg room."

Pros: "Entertainment system was new and easy to use. Seats in premium economy were quite comfortable."
Cons: "A vegetarian / pescatarian option on the menu would have been nice but other than that, all good."

Pros: "Very cramped seats"

Cons: "Nothing much"

Pros: "Movies selection is great. Seating space is comfortable."
Cons: "Boarding process could’ve been smoother"

Pros: "Best airline I've ever been on"

Pros: "Flight was very pleasant and enjoyable, on time for both departure and arrival."
Cons: "Meals were served rather slow as we were last for row 45 but there was insufficient time for us to finish the meal, collection of trays started in 5 minutes time"

Cons: "Satisfied service friendly staff overall satisfied."

Pros: "Generally good Flight was operated by Silk Air"
Cons: "Entertainment score is not meaningful because of the short flight time."

Pros: "Crew was very helpful and courteous Entertainment system was pretty good Food was good. They could have given water bottles instead of asking for water."
Cons: "Seat comfort in Economy was just ok. Since this was a long haul flight, seats could have been better."

Cons: "Very tight space"

Pros: "Nothing beats Singapore SQ!"

Pros: "Comfortable seat, variety of entertainment (sceen) , good food options and friendly and courteous service."

Pros: "The crew was very nice and professional and the amenities were top notch."
Cons: "There wasn't enough leg room. My knees touched the chair in front of me the whole time."

Pros: "The attentiveness of the flight attendants and the new plane."

Pros: "I will only use Singapore Air for anywhere they fly. They really care about their passangers, 2 checked bags 1 carryon no charge, no airline does that. They constantly feed u & alcoholic beverages all at no extra charge. Flight attendants always have a smile on their flight. In flight entertainment was great, touch screen and remote controller. They supply earbuds, socks, toothbrush and paste."
Cons: "Absolutely no complaints"

Pros: "Finally, I could go to my final destination as planned by transmitted to Korean Air flights."
Cons: "My first flight of JetBlue from Olandor to New York was delayed that leading to my connecting flights to my destination were missed. Now, my suitcases have been missed, too."

Pros: "Excellent service and attitude from ALL crew! Roomy premier economy!"

Pros: "The serivce was amazing. Also it was clean and the food was great."

Cons: "Expected to have more indian movie choices."

Pros: "Premium economy"

Pros: "Friendliness"

Pros: "Service and food"

Pros: "Good crew service"
Cons: "poor boarding arrangement. passenger did not follow the boarding group arrangement boarding the plane."

Pros: "Christmas decorations, service, attitude of staff"

Pros: "The business class bed was the best I have yet encountered. The food and service were great. And the stews? Gorgeous and so agreeable. One young lady even helped me with my back injury; turns out she was studying physical therapy. You can't find a better ride than that,"

Cons: "too long a flight 17 hours from SFO to Singapore"

Pros: "Crews are truly nice and patient"
Cons: "Crews are very nice, food are not really good"

Pros: "Friendly crew, efficient boarding"
Cons: "Food not good and inefficient service, very old plane and entertainment system doesn't work properly, below expectations for such a good airline"

Pros: "Great service"

Cons: "Need to be able to upgrade with Krisflyer Miles"

Pros: "the flight time was quick , by the time you took off you practically were preparing for landing"
Cons: "nothing disappointing"

Pros: "Upgraded to biz class, which was fantastic"

Pros: "Great flight amazing service"

Pros: "Huge selection of movies Towel service, socks, and toothbrush for economy class Snacks included entire chocolate bars! Friendly staff"

Pros: "Polite crew took good care of my needs"
Cons: "Food was really bad could do better . Movies were not as current but a good collection."

Cons: "Seats are tight and hard"

Cons: "Too hot in plane Food really late, 1h after special meals Entertainment system archaic, age of plane All isles seats gone as soon as checkin open"

Pros: "Courteous, Professional Crew. Amazing Service."

Pros: "Leg room in economy is good, even for tall people. Food was actually quite good."
Cons: "Two of our family's seats would not recline, although they were not near an exit row."

Pros: "I am still trying to find my bags. I missed my connection and Jet Blue made me stand in a line to get rebooked for 7 hours. Unprofessional, uncaring. None of this was my fault but everyone who represents Jet Blue treated me as if it were. Never again"

Pros: "Excellent service, food, in-flight entertainment (what choices!!), and the plane was very up to date as well. Made for a very very pleasant flight experience. Especially for how long the flight was (18 hours or so)"
Cons: "The get out and get back in halt at Hong Kong. Practically the entire flight had to do this, quite wasteful. Bad customer experience. Find a better way please! If Hong Kong makes you do that switch over to another airport, better yet make no halt. I have flown direct from SF to Singapore before so not sure why this halt."

Pros: "Professional, courteous, high-quality all around from food, to service, to entertainment options. Singapore Airlines is first class all the way."
Cons: "None."

Cons: "Breakfast was pathetic. Not fresh. For 16 hours flight only two meals were served and no snacks were provided"

Pros: "Great food, friendly staff, on time... what else do you need?"

Pros: "Food"
Cons: "Nada"

Pros: "Staff were very friendly, helpful and attentive. Good movie selection. Food was above average for airplane food. Nice modern plane."
Cons: "Headphone buds weren't great. We were delayed two hours taking off, but thankfully my connecting flight was held so no further delay."

Cons: "Flight was delayed, but other than that, flight was great."

Pros: "So welcoming and so caring"
Cons: "Food"

Pros: "Yes"
Cons: "Good flight"

Pros: "Food and being ontime"
Cons: "Seats are too hard"

Cons: "Great service."

Cons: "As with all economy seating...it is cramped"

Pros: "Yes overall probably the best flight to Chennai from DC"

Pros: "The crew was super amazing and went to all extent to make our journey with infant comfortable"

Pros: "Crew was professional"
Cons: "Plane is dirty Food is disgusting Bags treated so badd"

Pros: "Crew was friendly."
Cons: "Food"

Cons: "Bad service for wheel chair. No wheel chair at Doha Airport! Need to walk."

Pros: "Nothing amazing. Everything was okay and average."
Cons: "They weighed carry on baggage and made me pay extra. No other airline does that. The check in crew at LAX were not friendly at all. No hot towel service after boarding. Food served was very small portion, not enough. Only 2 meal service during 16 hour flight. Not enough beverage service in between."

Pros: "Good service and a modern airplane"
Cons: "The check in at JFK, too chaotic"

Cons: "It was delayed 3hrs but no regret from staff. Doha to staff very bad and arrogant"

Pros: "aircraft A350 , food choices , Doha airport , Staff attitude and willingness to help ."

Pros: "The friendly and helpful service."
Cons: "There was a long line by my seat to use the restrooms."

Pros: "Food , good accommodation, friendly treat!"
Cons: "No thing really!"

Pros: "Ground crew was especially helpful to my mother who could not speak English or Arabic, and had never flown before. She also had difficulty walking, so everyone assisted her in the airport and during her long connection in Doha."

Pros: "Everything was good - food, entertainment, on time."

Pros: "The food and the crew were excellent. Highly recommend the chicken massals"
Cons: "The seats in economy class were a little too close for comfort"

Pros: "It was on time."
Cons: "The food sucked."

Pros: "Crew were great and sincere"
Cons: "Qatar gave problems changing flight for emergency purpose and had produced all documents but they wanted further documentation which could not have access because at,a foreign country. Felt they don't care and it was all to do with money which had to pay."

Cons: "Flight was diverted to Kuwait, due to poor condition for landing in Doha and we loose connection to Bucharest."

Pros: "Food was far superior to any other airline food. As was customer service. Airline payed for a nice hotel during lng layover."
Cons: "Clearing immigration in Qatar took about two hours. They had so many staff overal at the airport, but were super understaffed at immigration."

Cons: "Delayed"

Pros: "Food was better. Seating was comfortable."

Pros: "All around a great experience."

Pros: "Gate crew was great"
Cons: "Boarding seemed haphazard as it took quite awhile for all of the pasengers to stow their luggage and settle down."

Pros: "Great service, on-time flights, very comfortable planes in excellent condition. Great value for flight cost, BOS-KTM, through DOH. I would fly again with them."
Cons: "Lots of mediocre movies to select from. Very slow deboarding in Doha onto buses."

Pros: "Everything"
Cons: "Meals & Snacks Meals served on board and in the lounges need improvement."

Pros: "Very comfortable flight and crew"
Cons: "The plain was very old."

Pros: "A new Dreamliner. Nice! Very good service. Gate personnel were very accommodating. Nice smooth flight. Doha airport was nice and mostly empty. Mediocre selection of restaurants."

Cons: "Did not know what Vegetarian Jain meal should taste like! Even goats and sheep woud not have liked the taste of this special meal. Fortunately, cabin crew member was kind enough to give me a regular Hindu veggie meal rather than my pre-selected Vegetarian Jain meal (VJML) - DO NOT CHOOSE VJML on Qatar, unless you wanna faint from the horrible food! The tray was dirty! Co-passengers in the row behind me were also complaining The audio lead of my headphone would not go into the outlet in the seat armrest! So I had to use audio from neighboring (empty) seat and sync it with video from screen for my seat. What a pain!"

Pros: "Comfort of the seat/bed"

Cons: "The passenger sitting next to me was really sick due to flu. When i explained the situation and asked for masks to the attendant, you guys did not have even one. I was disappointed with that. I think the flight should have some for these kinds of situation so that other passengers can protect themselves. Thanks."

Pros: "The food was good. The legroom was enjoyable."
Cons: "I checked two bags and had them marked 'fragile', as I had valuables in there that I packed securely. When I retrieved the bags on the carousel, the fragile sticker was mangled, and both items from both bags were broken. Pieces of art I can not replace. Also, it took over 30 minutes upon multiple requests for the attendant to acknowledge my need for assistance."

Pros: "Very attentive flight attendants-very courteous and responsive to all of the folks sitting in the "cheap seats"."
Cons: "Nothing to complain about in the entire process from ticketing through flight and disembarkment"

Pros: "Checkin was really quick, needed to have some facilities for the passengers who have more than 8hrs layover."
Cons: "The crew was not efficient or always looking for shortcut. The specific person assigned never recommended or gave any information about the amenities available rather was waiting to be asked uneasily and was not polite at all. Need to be trained more effectively for such a 5 star airlines."

Pros: "Food was great, good selection of entertaiment and movies, seat comfortable (even for economy class). Very friendly flight attendants. This was my first flight with Qatar and I'm now a big fan"

Pros: "Liked the raw vegetarian meal as it was perfectly plain. Attendants also very solicitous and went up and down several times with water after the meal."
Cons: "Seats are small and huge line for the toilet, but that is the nature of the plane and not Qatar's problem. Boarding was only good because passengers did not cooperate adn stood up when they were asked repeatedly not to."

Pros: "Everything is fine and have a wonderful time"

Pros: "The crew on the flight was excellent. They'll bring you pretty much anything reasonable you ask for. In flight entertainment options were many. I don't eat a lot of airline food, but the meals exceeded my expectations."
Cons: "I am quite tall (6'5"/1.92m), the in flight comfort was brutal. It'll take my knees a week or two to forget the constant jamming from the seat in front of me. Otherwise, on boarding was well organized, but very slow. Sound quality on provided headphones was very poor."

Pros: "The staff was friendly throughout and boarding was quick. There were no delays in taking off. They had also helped organize a hotel for the long layover including meal vouchers, visa, and return transfers."
Cons: "During meal times they didn't ask the person ahead of me to put their seat up which made it difficult to eat. They also ran out of quite a few meal options on the various flights I took."

Pros: "the best air line I've ever been"

Pros: "Great Crew, seat space was great too"
Cons: "The cabin sound proofing can be improved. Especially the clicity clack from passengers eating. The pre boarding space was very limited."

Pros: "Aircraft was new and good."
Cons: "Non Vegetarian meal was over by the time the service reached me."

Pros: "Great"
Cons: "Non"

Cons: "Tiny seat spaces"

Pros: "Qatar Airways is a nice airline and it's obvious they work on making your flight a pleasant experience with a lot of food, entertainment, etc"
Cons: "My flight was delayed 4 hours upon initially arriving to the airport. While it was important for me to be there when I found out this information because I needed to reschedule my connecting flightso due to the delay, this should not be required. Qatar Airways, knew the flight was going to be delayed at least 10 hours before they announced it. They should have already began the process of rescheduling connecting flights and figuring out problems before passengers arrive to the airport. I probably spent 45 minutes at the ticket counter working things out."

Pros: "upgrade flight"
Cons: "n.a"

Pros: "Everything was good."

Pros: "We missed the connection because the Istanbul airport is a silent airport and no announcement were made for boarding."
Cons: "Announcement from crew or reach out to people in front of gate would help. Also, the staff at Istanbu airport is so rude and have no respect for customers."

Pros: "CREW WAS GOOD FOOD AND SERVICE WAS TERRIBLE"
Cons: "NO SEAT MONITOR WAS WORKING. ANNOUNCEMENT WAS TERRIBLE.SEAT WAS MUTILATED FOOT REST WAS NOT WORKING.OVER ALL VERY POOR SERVICE."

Pros: "food is amazing"
Cons: "seat is outdated, but new seat for biz is coming very soon"

Pros: "Very old plane, seats not updated and not working properly, food was served once on an 8 hour flight, there was turbulance for over 5 hours consistently, and the pilots did nothing to go around it. As a pilot, i can tell you this can be avoided. Some of the crew were not friendly. Old movie library."
Cons: "New and updated plane, especially business class, more trained crew, seats that work and function normally, better and more food, served a light breakfast on an 8 hr flight. Updated movie library."

Cons: "All the staff at the boarding part seem like they unorganized anything. They let all business passengers got it first but they didn’t open the gate door untill all passengers came through. We have to stuck by the gate door for 10-15 min. They not say anything what happened and any apologies word."

Cons: "Vegetarian meals can be better"

Pros: "Comfort Entertainment Friendly Staff"
Cons: "N/A"

Pros: "Food excellent,crew are friendly, polite."
Cons: "Nothing"

Pros: "Check in process, helpful ground crew and airplane"
Cons: "Comfort of seats are horrible for a trip so far, they need more cushion."

Cons: "While seated in the plane we saw our second suit case. We called the stewerd and advised him of our observation and he promised to check with his supervisors; he came back and confirmed that all is under control. Arrived Bordeaux and the luggage didn’t. It took two days to get the suitcase and it took hours of follow up and the airport agent kept giving false excuses. At the end we drove to the airport and picked it up ourselves. Of course at the airport we listened to more trash."

Pros: "Getting Home"
Cons: "Everything the seats were so close to the other seat forget it they Reclined. No service at all one bottle of water for about 6 hours they never passed by once. Flt. Att.’s were nice but no training no customer service. Like cattle I just want to forget the trip"

Pros: "Good food"
Cons: "Uncomfortable seating, oldish plane, depressing colour combinations in the plane. Plane lavatory was dirty"

Pros: "Inflight entertainment"
Cons: "Boarding process did not respect travel privileges. Business and Star Alliance Gold members were shuttled en Mase with all other travelers. Process should be respected regardless of the destination."

Pros: "The flight was for the most part quite comfortable"
Cons: "The person sitting behind me (she could not get comfortable and kept jarring my seat) and the baby crying two rows ahead of \me"

Pros: "Crew was very helpful!"

Pros: "Smooth flight in general, nice staff"
Cons: "Food used to be better"

Pros: "Crew in both flights were friendly. The service boarding etc was great. Flight was very turbulent."
Cons: "Passenger next to me wanted water constantly. The passenger on left of me constantly wanted wine. One got very little attention while the other treated like royalty. Unfortunately the African passenger who wanted water went thirsty a lot."

Pros: "I did not like anything."
Cons: "Everything. I will never book a flight from Kayak from now on. Kayak just charged us a lot of money and did not do anything for us."

Pros: "Everything- well done"

Cons: "some staff spoken English was not upto the mark"

Pros: "love georgia!!"

Pros: "I was very impressed that I am already looking to travel again with the airline on my next travel!"

Pros: "While my family and I were waiting for boarding in chairs in front of the gate, my little child falet down and had very minor cut with one blood sign and drop but first aid group came and made some tissue cleaning to the cut with detergent. They told me that medical report is required by the flight captain and this report will cost me 230 TL. I told them no need for their report but they told me that I may not travel and the male misbehaved againest my wife when she told him that no need for their medical assistant and he replied this is not your country. They sqwezed us at the last minute and my remaining family at the plane and they told me that I am not authorized to travel with my wife and small child. We are total of 9 passingers. We were only remaining at the lounge. I told them my remaining family are at plane and I must travel otherwize I am going to claime all charges againest Turkish airline. Finaly at last minute they let me board."

Pros: "Flight was on time even if Bad weather conditions"
Cons: "I forgot to choose special meal request but they have good vegeterian food options"

Pros: "Every thing"
Cons: "Nothing"

Pros: "The food! So much food that at one point they were bringing more things and i just looked at them like are u crazy? It was tasty and warm."
Cons: "I liked everything."

Pros: "No air conditioner. Sweated like a pig the whole 13 hour flight"
Cons: "No ac"

Pros: "Service and people"
Cons: "Long lines and security pat downs...."

Pros: "food"
Cons: "Delayed For more than an hour"

Pros: "Very relaxing, excellent food, very good customer service, I love Turkish Airlines."
Cons: "The food on the flygh istanbul to New York was not as good as usual. It was a bit cold, but a part of this everything was excellent. Overall I am very happy!!"

Pros: "Great experience whether I was going or coming. I loved it."
Cons: "Waiting on the tarmac for the bus to shuttle us to the terminal. The limitation on carrying my laptop into the cabin. Having to check such expensive, delicate equipment under the airplane where baggage handlers couldn't care less about how they manhandle the luggage sucked."

Pros: "On time"
Cons: "Nothing"

Pros: "Everything"

Pros: "Comfortable seat Good food Great entertainment options USB to charge phone at the seat"
Cons: "Nothing. Excellent experience"

Pros: "The crew member that was in my area was really nasty, all the other ones where great! They had to cover for her ... she did a very bad job ."
Cons: "The pasta was hard , looked like cardboard. My daughters could not eat , they ordered that and by the time we had a chance to let them know it was not possible to eat , they run out of other option. The next meal was pasta again , no other option ... so they where not able to eat the whole 12 hours flight."

Pros: "Best value on the market. Excellent service. Great food and beverages. Very good service. Excellent Longe in Istanbul makes Most Club Longe look like a dump."
Cons: "My TV remote was broken. I could have used next seat but was too lazy."

Pros: "Crews were very good.On my trip from SF to Mumbai, I requested Veg food, it was confirmed by your office, but in flight me and my wife did not get veg food.For 13 hours we were left hungry. I did not get whatever I paid for. I want monitory compensation for that."
Cons: "As per the comments above"

Cons: "Arrived 30mins late; flight full and cramped"

Pros: "The entire inflight experience was great from start to finish."
Cons: "I approached the Transfer Desk when there was no line and asked the person working if it was possible to switch to an exit row seat because of my height. The man helping me lied to my face and told me that he could not make the change because the flight was full. when I got on the plane, there were over two dozen empty seats. It was very clear that he just did not want to invest the few seconds it would take to address my concern, or give me a credible reason why he could not make the change."

Pros: "The in-flight entertainment was above average. The in-flight crew was fine, although not particularly gracious or kind."
Cons: "The on-ground customer service in Istanbul was the worst experience I have ever had with humans in my whole life. They were unhelpful, rude, blatantly ignored people, dismissive, walked away from customers when they didn't want to deal with them, did not do anything to keep order when people were cutting in line after people were waiting for 4+ hours. I will avoid flying Turkish Airlines as best I can."

Pros: "Everything, fast boarding, good experience overall, turkish airline provides good services for very affordable price, i am pleased"
Cons: "Airport is huge, the walk to gate 701 was long, i thought i would never get there...i think they should arrange some kind of transportation to gates like 701"

Pros: "Flights left on time. Boarding was good."
Cons: "It was blazing hot on every flight. Several guests complained yet the staff kept saying it was cool enough and would not turn it cooler. Although the menu said cheese sandwiches were available at any time, we were told there weren't any when we asked for one. The guest next to me would push the attendant button and the staff would walk by several times without even making eye contact with her."

Pros: "The steward was very nice. He let me store my special salad and pudding."

Pros: "It was a very smooth flight"
Cons: "There was very little leg space. the crew wasn't very responsive to the help botton"

Pros: "The service was great non stop and the goodies for the kids was amazing."
Cons: "All was good"

Cons: "I am fairly tall and lanky, so the configuration of the seats makes it very difficult to get comfortable. In this specific case, the person in front of me kept trying to recline their chair despite the chair pressing painfully into my knees."

Pros: "Decent food. Good service. Great media access for international flights."
Cons: "Nothing to knock down"

Pros: "Seats were roomy. Plenty of movies."
Cons: "Long gap between meals, they didn't walk thru and offer enough water or sandwiches. No sandwiches even once? Sometimes cabin was warm."

Pros: "I like the comfort of the interior, the entertainment."
Cons: "I did not quite like the food. The macaroni dish, I did not like particularly. Didn't eat it at all. Chinyere"

Pros: "Crew was lovely."
Cons: "Heat on flight was too high the second half."

Read more about Singapore Airlines
COVID-19 information

Safety measures for airlines flying from Colorado to Kathmandu

Airlines flying from Colorado to Kathmandu have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters

Mandatory masks

Masks required on board, masks provided

Social distancing seating

Middle seats unavailable to book

Pre-flight testing

Testing for antibodies, testing for symptoms

Book cheap flights from Colorado to Kathmandu

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Multiple Airlines
35h 05m
DEN - KTM
11/4
Wed
2 stops
Qatar Airways
27h 28m
DEN - KTM
11/24
Tue
2 stops
Multiple Airlines
34h 55m
DEN - KTM
11/11
Wed
2 stops
Multiple Airlines
58h 50m
DEN - KTM
11/17
Tue
3 stops
Multiple Airlines
43h 45m
DEN - KTM
12/2
Wed
2 stops
Multiple Airlines
56h 40m
DEN - KTM
11/4
Wed
2 stops
Multiple Airlines
35h 10m
DEN - KTM
12/1
Tue
3 stops
Multiple Airlines
29h 05m
DEN - KTM
11/4
Wed
3 stops
Multiple Airlines
39h 00m
DEN - KTM
11/11
Wed
3 stops
Multiple Airlines
58h 44m
DEN - KTM
11/14
Sat
3 stops
Multiple Airlines
43h 45m
DEN - KTM
11/5
Thu
3 stops
Multiple Airlines
52h 55m
DEN - KTM
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