HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kolkata

$1,173+ Cheap flights from Denver (DEN) to Kolkata (CCU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — CCU
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Kolkata with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Denver to Kolkata

Cheapest flights from Denver to Kolkata
Explore the most affordable flight options available from Denver to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This FlightHub deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/281:59 pm
DEN
-
CCU
2 stops25h 01m
Multiple Airlines
Sun 10/253:25 am
CCU
-
DEN
2 stops31h 34m
Multiple Airlines
Deal found 4/27$1,173
This Justfly.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:30 am
DEN
-
CCU
2 stops28h 30m
Qatar Airways
Wed 9/304:00 am
CCU
-
DEN
2 stops27h 09m
Qatar Airways
Deal found 4/23$1,215
This Qatar Airways deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am
DEN
-
CCU
2 stops33h 00m
Qatar Airways
Mon 9/144:00 am
CCU
-
DEN
2 stops29h 30m
Qatar Airways
Deal found 4/27$1,256
This Qatar Airways deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:37 am
DEN
-
CCU
2 stops28h 23m
Qatar Airways
Mon 5/114:00 am
CCU
-
DEN
2 stops31h 36m
Qatar Airways
Deal found 4/23$1,316
This FlightHub deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:59 pm
DEN
-
CCU
2 stops31h 06m
Multiple Airlines
Mon 9/78:35 pm
CCU
-
DEN
2 stops27h 52m
Multiple Airlines
Deal found 4/23$1,328
This Indian Eagle deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:10 pm
DEN
-
CCU
2 stops44h 50m
Qatar Airways
Wed 7/294:00 am
CCU
-
DEN
2 stops31h 29m
Qatar Airways
Deal found 4/24$1,529
This FlightHub deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1411:59 pm
DEN
-
CCU
2 stops46h 16m
Multiple Airlines
Tue 6/3010:30 am
CCU
-
DEN
2 stops47h 59m
Multiple Airlines
Deal found 4/27$1,573
This Indian Eagle deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:05 pm
DEN
-
CCU
2 stops29h 15m
Multiple Airlines
Wed 6/174:10 pm
CCU
-
DEN
2 stops33h 40m
Multiple Airlines
Deal found 4/24$1,680

Find flight deals from Denver to Kolkata

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Kolkata (CCU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,173
(FlightHub)

Popular in

December

Cheapest in

October
Provider with most accurate pricing for Denver Intl-Kolkata Netaji S. Chandra flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Kolkata Netaji S. Chandra flights.
Search Deals
From Denver Intl to Kolkata Netaji S. Chandra
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($342 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($97 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Kolkata that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from Denver to Kolkata that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Thu 5/7

10:37 am-2:30 am

2 stops28h 23m

Kolkata Netaji S. Chandra

Mon 5/11

4:00 am-12:06 am

2 stops31h 36m

$1,316

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Sat 6/13

11:59 pm-8:20 pm

2 stops32h 51m

Kolkata Netaji S. Chandra

Sat 6/27

11:00 pm-10:59 pm

2 stops59h 29m

$1,827

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Sun 6/7

11:41 pm-9:20 pm

2 stops34h 09m

Kolkata Netaji S. Chandra

Mon 6/15

5:40 pm-10:59 pm

2 stops40h 49m

$1,890

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Sun 6/14

9:06 am-2:30 am

2 stops29h 54m

Kolkata Netaji S. Chandra

Tue 6/30

4:00 am-11:04 pm

2 stops30h 34m

$1,901

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Mon 5/11

10:37 am-5:00 am

3 stops30h 53m

Kolkata Netaji S. Chandra

Mon 9/7

7:15 pm-4:30 pm

2 stops32h 45m

$1,992

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Sun 6/14

8:10 pm-6:35 pm

3 stops34h 55m

Kolkata Netaji S. Chandra

Sun 6/28

8:35 pm-6:04 pm

3 stops32h 59m

$1,992

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Mon 6/8

4:40 pm-3:20 pm

3 stops35h 10m

Kolkata Netaji S. Chandra

Sun 6/14

1:00 am-11:10 pm

2 stops33h 40m

$2,021

DenverKolkata

DEN - CCU

DENCCU

Denver Intl

Fri 6/12

5:05 am-8:10 am

3 stops39h 35m

Kolkata Netaji S. Chandra

Fri 6/26

8:55 pm-12:40 am

3 stops63h 15m

$2,112

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Sorted by cheapest first

Compare providers for flights from Denver to Kolkata

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Kolkata in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Kolkata flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Kolkata flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Kolkata flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Kolkata flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Kolkata flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Kolkata

Have a flexible travel schedule? Discover the best time to fly to Kolkata from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Kolkata

How much does it cost to fly round-trip from Denver to Kolkata?

Reviews of airlines servicing Kolkata

Get insights into the airlines that provide service to Kolkata. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kolkata. Reviews last updated April 28, 2026.
Peruse reviews from past customers who have flown with Qatar Airways and Lufthansa from Denver to Kolkata to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,726 reviews

Food

7.3

Crew

7.9

Entertainment

7.3

Comfort

7.3

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Qatar Airways
7.4
Good
3,726 reviews
Qatar Airways
7.4
Good
3,726 reviews

Food

7.3

Crew

7.9

Entertainment

7.3

Comfort

7.3

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Lufthansa
6.8
Okay
7,956 reviews
Qatar Airways
7.4
Good
3,726 reviews

Food

7.3

Crew

7.9

Entertainment

7.3

Comfort

7.3

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

Related info for your journey

Find useful and relevant information for your journey from Denver to Kolkata. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Denver to Kolkata?

    Airlines like Qatar Airways and Air India fly from Denver to Kolkata in about 28h 23m. The time it takes to get you to your destination can typically vary by up to 4h 28m. The distance from Denver to Kolkata is about 8030 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Denver to Kolkata round-trip?

    Qatar Airways, at $1,133, was found to be the cheapest airline from Denver to Kolkata. An alternate airline flying to your destination would be Lufthansa. Users have found that Qatar Airways is 24% cheaper than the other options available to this destination.

  • Can I find deals for flights from Denver to Kolkata that include hotel bookings?

    Yes. In addition to deals on Denver to Kolkata flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Kolkata?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Kolkata.

  • Can I find deals for business class flights from Denver to Kolkata?

    Yes. Cheapflights offers flight deals from Denver to Kolkata by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Kolkata by adding a car rental and/or hotel reservation to your travel itinerary.
Kolkata car rentals
Kolkata Netaji S. Chandra Airport car rentals

Top 2 airlines flying from Denver to Kolkata

Discover the top 2 airlines that operate flights from Denver to Kolkata. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$1,133Average$1,356FlexibilityNo cancel feeOn-time68%
LufthansaCheapest$1,276Average$1,382FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.