IND - OPO

$346 Find Cheap Flights from Indianapolis to Porto - 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 from Indianapolis to Porto departing on 9/23. 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.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$734
Overall average: $490
Delta
Mon 1/4Wed 1/13
IND - OPO • 2 stops
Cheapest one-way
$346
Multiple Airlines
Wed 9/23
IND - OPO • 3 stops
Top airlines
Delta
Cheapest • from $734 (round-trip)
KLM
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Indianapolis and Porto. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Newark (EWR)
Cheapest • Avg $1,240 (round-trip)
Newark (EWR)
Shortest trip • 11h 09m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 65% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Indianapolis to Porto (IND-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Indianapolis to Porto 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 round-trip flight deals from Indianapolis to Porto

Mon, Jan 4 - Wed, Jan 13
Delta Logo
12:00 pm - 10:35 am
IND
-
OPO
17h 35m
2 stops
Delta Logo
11:15 am - 12:32 am
OPO
-
IND
18h 17m
2 stops
$734Delta
Tue, Dec 29 - Thu, Jan 7
United Airlines Logo
8:00 am - 9:30 am
IND
-
OPO
20h 30m
1 stop
United Airlines Logo
6:00 am - 10:57 pm
OPO
-
IND
21h 57m
2 stops
$784United Airlines
Sun, Dec 27 - Wed, Jan 6
Delta Logo
10:25 am - 10:35 am
IND
-
OPO
19h 10m
2 stops
Delta Logo
5:00 am - 12:32 am
OPO
-
IND
24h 32m
2 stops
$787Delta
Tue, Dec 29 - Thu, Jan 7
United Airlines Logo
9:21 am - 9:30 am
IND
-
OPO
19h 09m
2 stops
United Airlines Logo
6:00 am - 10:57 pm
OPO
-
IND
21h 57m
2 stops
$788United Airlines
Thu, Dec 31 - Wed, Jan 6
United Airlines Logo
3:00 pm - 9:30 am
IND
-
OPO
13h 30m
1 stop
United Airlines Logo
12:35 pm - 9:48 am
OPO
-
IND
26h 13m
2 stops
$834United Airlines
Thu, Dec 31 - Thu, Jan 7
Delta Logo
2:00 pm - 10:35 am
IND
-
OPO
15h 35m
2 stops
Delta Logo
5:00 am - 9:08 pm
OPO
-
IND
21h 08m
2 stops
$837Delta
Tue, Dec 29 - Tue, Jan 5
Iberia Logo
3:16 pm - 8:00 pm
IND
-
OPO
23h 44m
2 stops
Iberia Logo
8:40 pm - 6:40 pm
OPO
-
IND
27h 00m
2 stops
$872Iberia
Tue, Dec 29 - Tue, Jan 5
United Airlines Logo
8:00 am - 9:30 am
IND
-
OPO
20h 30m
1 stop
United Airlines Logo
12:35 pm - 10:57 pm
OPO
-
IND
39h 22m
2 stops
$883United Airlines
Mon, Aug 10 - Wed, Aug 19
United Airlines Logo
12:54 pm - 9:45 am
IND
-
OPO
15h 51m
1 stop
United Airlines Logo
11:20 am - 4:33 pm
OPO
-
IND
34h 13m
2 stops
$884United Airlines
Fri, Oct 9 - Tue, Oct 13
Multiple Airlines Logo
4:25 pm - 6:50 am
IND
-
OPO
33h 25m
2 stops
Multiple Airlines Logo
8:40 am - 4:34 pm
OPO
-
IND
36h 54m
2 stops
$892Multiple Airlines
Booking Insights

KAYAK's insights & trends for Indianapolis to Porto flights

Get data-powered insights and trends into flights from Indianapolis to Porto to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Indianapolis to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Indianapolis to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Indianapolis to Porto is January, where tickets cost $490 (return) on average. On the other hand, the most expensive months are June and September, where the average cost of round-trip tickets is $2,647 and $2,494 respectively.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$346
Best time to beat the crowds with an average 65% drop in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Indianapolis to Porto

When to book flights from Indianapolis to Porto

Are your dates flexible? Find out the best times to travel from Indianapolis to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Indianapolis to Porto

  • What is the cheapest flight from Indianapolis to Porto?

    In the last 5 days, the lowest price for a flight from Indianapolis to Porto was $346 for a one-way ticket and $734 for a round-trip.

  • Do I need a passport to fly between Indianapolis and Porto?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Indianapolis and on arrival in Porto.

  • Which aircraft models fly most regularly from Indianapolis to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Indianapolis to Porto?

    SkyTeam is the only airline alliance operating flights between Indianapolis and Porto.

  • How does KAYAK find such low prices on flights from Indianapolis to Porto?

    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 Indianapolis to Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Indianapolis 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 Indianapolis to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Indianapolis with another airline. Booking your flights between Indianapolis and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Indianapolis to Porto?

    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 Porto from Indianapolis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Indianapolis to Porto

 
See real verified KAYAK customer reviews for airlines flying from Indianapolis to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Indianapolis to Porto? 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.
7.8
KLMOverall score based on 1534 reviews
7.3Food
7.8Boarding
7.7Comfort
8.4Crew
7.2Entertainment
Airline reviews

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

2.0 MediocreNewton, Mar 2026
IAD - AMS
Read more KLM reviews

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

Seats were comfortable crew members support was very good but AVML ordered or selected by us needs a lot of improvement.

The IFE was quite old, but it worked fine and the content was good. The cabin crew were excellent and the food was as also very good

Everything you need to know for your flight from Indianapolis to Porto

Information on your arrival and departure airports

Indianapolis (IND)
Porto (OPO)