IND - OPO

$375 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

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Indianapolis to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Indianapolis to Porto, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$837
Typical prices: $1,010-$1,236
Delta
Sun 10/4Fri 10/9
IND - OPO • 1 stop
Cheapest one-way
$375
Multiple Airlines
Wed 9/23
IND - OPO • 3 stops
Top airlines
Cheapest • from $837 (round-trip)
Best reviews • 7.4 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
Cheapest • Avg $1,207 (round-trip)
Shortest trip • 10h 59m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 62% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Sun, Oct 4 - Fri, Oct 9
Delta Logo
12:59 pm - 10:25 am
IND
-
OPO
16h 26m
1 stop
Delta Logo
5:00 am - 5:23 pm
OPO
-
IND
17h 23m
2 stops
$837Delta
Sun, Oct 4 - Fri, Oct 9
United Airlines Logo
5:02 pm - 7:00 am
IND
-
OPO
32h 58m
2 stops
United Airlines Logo
6:00 am - 11:44 pm
OPO
-
IND
22h 44m
2 stops
$845United Airlines
Sun, Aug 9 - Tue, Aug 25
Delta Logo
6:50 am - 10:25 am
IND
-
OPO
22h 35m
1 stop
Delta Logo
5:00 am - 7:01 pm
OPO
-
IND
19h 01m
2 stops
$887Delta
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
8:10 pm - 6:55 am
IND
-
OPO
29h 45m
2 stops
United Airlines Logo
12:15 pm - 11:35 pm
OPO
-
IND
40h 20m
2 stops
$889United Airlines
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
6:55 pm - 6:55 am
IND
-
OPO
31h 00m
1 stop
United Airlines Logo
12:15 pm - 11:35 pm
OPO
-
IND
40h 20m
2 stops
$890United Airlines
Sun, Aug 9 - Tue, Aug 25
Delta Logo
6:50 am - 10:25 am
IND
-
OPO
22h 35m
1 stop
Delta Logo
12:25 pm - 10:25 am
OPO
-
IND
27h 00m
1 stop
$894Delta
Sun, Aug 9 - Tue, Aug 25
Delta Logo
5:29 pm - 10:25 am
IND
-
OPO
11h 56m
1 stop
Delta Logo
5:00 am - 9:23 pm
OPO
-
IND
21h 23m
2 stops
$896Delta
Sun, Aug 9 - Tue, Aug 25
Delta Logo
5:29 pm - 10:25 am
IND
-
OPO
11h 56m
1 stop
Delta Logo
5:00 am - 9:23 pm
OPO
-
IND
21h 23m
2 stops
$897Delta
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
8:10 pm - 6:55 am
IND
-
OPO
29h 45m
2 stops
United Airlines Logo
6:00 am - 11:35 pm
OPO
-
IND
22h 35m
2 stops
$900United Airlines
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
8:10 pm - 6:55 am
IND
-
OPO
29h 45m
2 stops
United Airlines Logo
6:00 am - 11:35 pm
OPO
-
IND
22h 35m
2 stops
$901United 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 May, where the average cost of round-trip tickets is $2,647 and $1,876 respectively.

Good to know

Low seasonJanuary
Cheapest flight$375
Best time to beat the crowds with an average 63% drop in price.
Most popular time to fly and prices are also 16% 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 $375 for a one-way ticket and $837 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?

    Star Alliance 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.
7.4
United AirlinesOverall score based on 9887 reviews
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

Agents at gate were not immediately available to solve problems and once they did they didn’t fix all the fight connections

4.0 OkayRuss, Jun 2026
ORD - FRA
Read more United Airlines reviews

Agents at gate were not immediately available to solve problems and once they did they didn’t fix all the fight connections

1 flight cancelled Had to fly out of different city Flight at new departure city was delayed 3 hours causing us to miss connecting flights. By the time we did make it to Prague our luggage did not. Had to wait day and a half for luggage to be delivered. Customer service was not good. Agents did not arrive at gate until 5-10 minutes before boarding

I needed internet for critical matters and it never worked.

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was Swiss. Our kosher meals were literally frozen solid and therefore inedible, and the crew didnt care.

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

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

Information on your arrival and departure airports