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$441+ Cheap flights from Indianapolis (IND) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
IND — OPO
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap flight deals from Indianapolis to Porto

Cheapest flights from Indianapolis to Porto
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 August 1, 2026.

This United Airlines deal was found by Cheapflights users on 7/29. 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 11/1511:05 am
IND
-
OPO
2 stops17h 25m
United Airlines
Thu 11/196:00 am
OPO
-
IND
2 stops21h 14m
United Airlines
Deal found 7/29$733
This Expedia deal was found by Cheapflights users on 7/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:07 pm
IND
-
OPO
2 stops17h 38m
Iberia
Mon 11/98:40 pm
OPO
-
IND
2 stops31h 10m
Iberia
Deal found 7/27$773
This Expedia deal was found by Cheapflights users on 7/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:37 am
IND
-
OPO
2 stops14h 23m
Multiple Airlines
Wed 10/286:00 am
OPO
-
IND
2 stops15h 52m
Multiple Airlines
Deal found 7/31$818
This Expedia deal was found by Cheapflights users on 7/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:01 pm
IND
-
OPO
2 stops23h 24m
Multiple Airlines
Wed 10/216:20 am
OPO
-
IND
2 stops19h 16m
Multiple Airlines
Deal found 7/31$820
This Expedia deal was found by Cheapflights users on 7/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:20 am
IND
-
OPO
2 stops15h 30m
Multiple Airlines
Thu 10/296:00 am
OPO
-
IND
2 stops15h 52m
Multiple Airlines
Deal found 7/31$821
This Air Canada deal was found by Cheapflights users on 7/31. 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 10/137:01 pm
IND
-
OPO
2 stops30h 59m
Air Canada
Tue 10/2011:15 am
OPO
-
IND
2 stops35h 34m
Air Canada
Deal found 7/31$831
This Air Canada deal was found by Cheapflights users on 7/31. 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.
Mon 10/124:25 pm
IND
-
OPO
2 stops33h 35m
Air Canada
Tue 10/2011:15 am
OPO
-
IND
2 stops35h 34m
Air Canada
Deal found 7/31$835
This Delta deal was found by Cheapflights users on 7/31. 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 10/132:25 pm
IND
-
OPO
1 stop15h 05m
Delta
Tue 10/205:00 am
OPO
-
IND
2 stops15h 27m
Delta
Deal found 7/31$840

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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$733
(United Airlines)

One-way from

$441
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,129
Provider with most accurate pricing for Indianapolis-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Indianapolis-Porto flights.
Search Deals
From Indianapolis to Porto
Search Deals
One-way flight from Indianapolis to Porto
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($553 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($121 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

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 2,558,603 searches. Data last updated August 1, 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

Price

Cheapest round-trip

IndianapolisPorto

IND - OPO

INDOPO

Indianapolis

Sun 11/15

4:30 pm-9:30 am

2 stops12h 00m

Porto

Thu 11/19

6:00 am-11:47 pm

2 stops22h 47m

$733

IndianapolisPorto

IND - OPO

INDOPO

Indianapolis

Tue 10/13

2:25 pm-10:30 am

1 stop15h 05m

Porto

Tue 10/20

5:00 am-3:27 pm

2 stops15h 27m

$840

IndianapolisPorto

IND - OPO

INDOPO

Indianapolis

Thu 11/19

12:48 pm-10:35 am

2 stops16h 47m

Porto

Mon 11/30

11:15 am-6:58 pm

2 stops36h 43m

$842
Quickest round-trip

IndianapolisPorto

IND - OPO

INDOPO

Indianapolis

Mon 10/19

5:59 pm-10:30 am

1 stop11h 31m

Porto

Thu 10/29

10:00 am-8:41 pm

1 stop14h 41m

$848
Cheapest one-way

IndianapolisPorto

IND - OPO

INDOPO

Indianapolis

Fri 8/28

12:15 pm-9:30 am

3 stops40h 15m

$441
Quickest one-way

IndianapolisPorto

IND - OPO

INDOPO

Indianapolis

Fri 8/28

12:34 pm-9:45 am

2 stops16h 11m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 August.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust 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 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.
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

What is the cheapest month to book a flight from Indianapolis to Porto?

Currently, January is the cheapest month in which you can book a flight from Indianapolis to Porto (average of $490). Flying from Indianapolis to Porto in June is currently the most expensive (average of $2,647). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 August 1, 2026.
Peruse reviews from past customers who have flown with KLM 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.
KLM
7.8
Good
1,552 reviews

Overall

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,552 reviews
KLM
7.8
Good
1,552 reviews

Overall

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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.

  • How long is the flight from Indianapolis to Porto?

    Airlines like United Airlines fly from Indianapolis to Porto in about 17h 25m. The time it takes to get you to your destination can typically vary by up to . There are 3932 mi between Indianapolis and Porto.

  • What are the cheapest airlines flying from Indianapolis to Porto round-trip?

    KLM, at $490, was found to be the cheapest airline from Indianapolis to Porto. An alternate airline flying to your destination would be United Airlines. These flights start at 62% lower than the current average price 3 months from now.

  • Can I find deals for flights from Indianapolis to Porto that include hotel bookings?

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

  • How can I find direct flights from Indianapolis to Porto?

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

  • Can I find deals for business class flights from Indianapolis to Porto?

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

  • What is the cheapest month to book a flight from Indianapolis to Porto?

    Currently, January is the cheapest month in which you can book a flight from Indianapolis to Porto (average of $490). Flying from Indianapolis to Porto in June is currently the most expensive (average of $2,647). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro

Browse thousands of different options on Cheapflights for your next trip

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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 2,558,603 searches. Data last updated August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$490Average$1,103FlexibilityNo cancel feeOn-time75%

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