$574+ Cheap flights from Indianapolis (IND) to Porto (OPO)
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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
IND — OPO
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from Indianapolis to Porto 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 Indianapolis to Porto
Cheapest
Best
Last-minute
Cheapest flights from Indianapolis to PortoExplore the most affordable flight options available from Indianapolis to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
Explore the most affordable flight options available from Indianapolis to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:22 am -
1 stop22h 08m
Tue 11/2412:35 pm -
1 stop30h 34m
Deal found 9/13![United Airlines logo]()
$574
This Justfly.com deal was found by Cheapflights users on 9/14. 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.
Sun 11/83:28 pm -
2 stops20h 17m
Wed 11/188:20 am -
2 stops16h 00m
Deal found 9/14![British Airways logo]()
$584
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:40 pm -
1 stop9h 50m
Fri 11/2012:35 pm -
1 stop16h 09m
Deal found 9/14![United Airlines logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:10 pm -
2 stops13h 20m
Thu 12/1012:35 pm -
2 stops16h 24m
Deal found 9/13![United Airlines logo]()
$589
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:11 am -
2 stops15h 29m
Tue 11/1012:25 pm -
2 stops15h 25m
Deal found 9/14![American Airlines logo]()
$590
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:22 am -
1 stop22h 08m
Fri 11/2012:35 pm -
1 stop16h 09m
Deal found 9/14![United Airlines logo]()
$591
This Ovago deal was found by Cheapflights users on 9/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/103:41 pm -
1 stop12h 49m
Thu 11/196:00 am -
2 stops22h 44m
Deal found 9/14![Lufthansa logo]()
$621
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:55 pm -
1 stop12h 20m
Mon 11/1610:15 am -
1 stop14h 47m
Deal found 9/14![Delta logo]()
$635
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:22 am -
1 stop22h 08m
Sat 11/2112:35 pm -
1 stop16h 09m
Deal found 9/14![United Airlines logo]()
$641
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:59 pm -
1 stop11h 31m
Wed 10/2112:40 pm -
1 stop28h 39m
Deal found 9/14![Delta logo]()
$646
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:30 pm -
2 stops36h 00m
Tue 11/1012:35 pm -
3 stops53h 09m
Deal found 9/14![United Airlines logo]()
$649
Best flights from Indianapolis to PortoDiscover carefully curated flight deals from Indianapolis to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from Indianapolis to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:22 am -
1 stop22h 08m
Tue 11/2412:35 pm -
1 stop30h 34m
Deal found 9/13![United Airlines logo]()
$574
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:00 am -
2 stops21h 15m
Mon 11/910:15 am -
2 stops18h 54m
Deal found 9/13![Delta logo]()
$689
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:55 pm -
1 stop12h 35m
Fri 11/2012:35 pm -
1 stop16h 09m
Deal found 9/14![United Airlines logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:00 pm -
1 stop16h 30m
Thu 12/1012:35 pm -
2 stops16h 24m
Deal found 9/13![United Airlines logo]()
$589
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:59 pm -
1 stop11h 26m
Wed 10/2112:40 pm -
1 stop13h 01m
Deal found 9/14![Delta logo]()
$694
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:30 pm -
2 stops36h 00m
Tue 11/1012:35 pm -
3 stops53h 09m
Deal found 9/14![United Airlines logo]()
$649
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/301:40 pm -
2 stops17h 05m
Sun 12/612:35 pm -
2 stops26h 45m
Deal found 9/13![United Airlines logo]()
$685
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:45 am -
2 stops20h 15m
Mon 10/266:00 am -
2 stops38h 23m
Deal found 9/10![United Airlines logo]()
$700
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:40 pm -
1 stop9h 50m
Mon 11/1612:35 pm -
1 stop16h 09m
Deal found 9/14![United Airlines logo]()
$739
Last-minute flights from Indianapolis to PortoDiscover last-minute flight deals from Indianapolis to Porto. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from Indianapolis to Porto. Data last updated September 15, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:55 pm -
2 stops35h 50m
Wed 10/2111:20 am -
2 stops32h 54m
Deal found 9/14![United Airlines logo]()
$759
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:59 pm -
1 stop11h 26m
Thu 10/221:25 pm -
1 stop12h 16m
Deal found 9/14![Delta logo]()
$694
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:59 pm -
1 stop16h 26m
Tue 10/205:00 am -
2 stops24h 05m
Deal found 9/14![Delta logo]()
$727
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:01 pm -
1 stop16h 44m
Wed 10/216:00 am -
2 stops17h 09m
Deal found 9/14![United Airlines logo]()
$726
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:00 pm -
2 stops16h 25m
Thu 10/225:00 am -
2 stops14h 22m
Deal found 9/14![Delta logo]()
$746
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:59 pm -
1 stop11h 31m
Wed 10/2112:40 pm -
1 stop28h 39m
Deal found 9/14![Delta logo]()
$646
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:59 pm -
1 stop11h 31m
Tue 10/205:00 am -
2 stops24h 05m
Deal found 9/14![Delta logo]()
$673
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:25 pm -
2 stops20h 10m
Wed 10/2111:20 am -
2 stops30h 22m
Deal found 9/14![Air Canada logo]()
$684
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:05 am -
2 stops18h 55m
Mon 10/2612:30 pm -
2 stops25h 18m
Deal found 9/14![United Airlines logo]()
$695
Find flight deals from Indianapolis to Porto
Discover tips and strategies to find the most affordable flight options for your journey from Indianapolis (IND) to Porto (OPO). 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 September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $574 (United Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $1,499 |
Cheapflights Fare Finder
Customize your flight search to find flights from Indianapolis to Porto 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 7,457,451 searches. Data last updated September 15, 2026.
Use the filters below to find and compare flights from Indianapolis to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Sun 11/8
6:22 am-9:30 am
1 stop22h 08m
Porto
Tue 11/24
12:35 pm-2:09 pm
1 stop30h 34m
$574
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Wed 11/11
3:55 pm-9:30 am
1 stop12h 35m
Porto
Fri 11/20
12:35 pm-11:44 pm
1 stop16h 09m
$585
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Tue 12/1
12:00 pm-9:30 am
1 stop16h 30m
Porto
Thu 12/10
12:35 pm-11:59 pm
2 stops16h 24m
$589
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Mon 11/2
4:30 pm-9:30 am
2 stops36h 00m
Porto
Tue 11/10
12:35 pm-12:44 pm
3 stops53h 09m
$649
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Mon 11/30
1:40 pm-11:45 am
2 stops17h 05m
Porto
Sun 12/6
12:35 pm-10:20 am
2 stops26h 45m
$685
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Fri 11/6
6:00 am-8:15 am
2 stops21h 15m
Porto
Mon 11/9
10:15 am-12:09 am
2 stops18h 54m
$689
Quickest round-trip
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Sun 10/11
5:59 pm-10:25 am
1 stop11h 26m
Porto
Wed 10/21
12:40 pm-8:41 pm
1 stop13h 01m
$694
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Wed 10/21
5:45 am-7:00 am
2 stops20h 15m
Porto
Mon 10/26
6:00 am-4:23 pm
2 stops38h 23m
$700
IndianapolisPorto
IND Indianapolis - OPO Porto
INDOPO
Indianapolis
Tue 11/10
6:40 pm-9:30 am
1 stop9h 50m
Porto
Mon 11/16
12:35 pm-11:44 pm
1 stop16h 09m
$739
Sorted by cheapest first
Compare providers for flights from Indianapolis to Porto
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 Indianapolis to Porto in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Indianapolis-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Indianapolis-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Indianapolis-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Indianapolis-Porto 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 Indianapolis-Porto 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 Indianapolis to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from Indianapolis with our price prediction graph.
IND-OPO
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 Indianapolis to Porto
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated September 15, 2026.
Peruse reviews from past customers who have flown with United Airlines from Indianapolis to Porto 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.
Entertainment
7.1
Food
6.7
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Entertainment
7.1
Food
6.7
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Related info for your journey
Find useful and relevant information for your journey from Indianapolis to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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Indianapolis and Porto flights
Browse other Indianapolis and Porto flight options. Last updated on September 15, 2026.
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Top airline flying from Indianapolis to Porto
Discover the top airline that operate flights from Indianapolis to Porto. 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 7,457,451 searches. Data last updated September 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$695 | Average$1,223 | FlexibilityNo cancel fee | On-time69% |