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Atsa Airlines Flights, Routes & Travel Guide

Explore the latest ATSA (4A) fleet and aircraft seat maps. Compare amenities, baggage, check-in, children and pet travel rules.

Last updated: October 2026
IATA: 4AFounded 1980HQ: Lima, Peru
Departure date
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About Atsa Airlines

Explore the latest ATSA (4A) fleet and aircraft seat maps. Compare amenities, baggage, check-in, children and pet travel rules.

ATSA Airlines was founded in 1980 and started operations as a charter airline for business aviation. Today, ATSA operates some scheduled domestic passenger services using a fleet of turboprop aircraft. The main base is at Lima's Jorge Chavez International Airport and destinations include Chachapoyas, Huanuco, Tingo Maria and Mazamari.

Airline code4A
Main hubLIM
Alliance-
Destinations3
Countries1
Fleet7
Updated: October 2026

Popular Atsa Airlines routes

RouteCitiesTypical durationWeekly flightsService
LIM to CHHLima to Chachapoyas1h 30m0NONSTOP
LIM to HUULima to Huánuco50m0NONSTOP

Atsa Airlines hubs and focus cities

Route map

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All Atsa Airlines routes

Search by airport, city or three-letter code

3 destinations · Updated: October 2026
Route endpoint

Routes serving Lima

1–4 of 4
RouteCitiesTypical durationWeekly flightsService
LIM to CHHLima to Chachapoyas1h 30m0NONSTOP
CHH to LIMChachapoyas to Lima1h 25m0NONSTOP
LIM to HUULima to Huánuco50m0NONSTOP
HUU to LIMHuánuco to Lima48m0NONSTOP
Routes and frequencies may change by season and travel date.
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Aircraft, cabins and onboard experience

View all aircraft

Aircraft

Cabin comparison

CabinSeat pitchSeat widthSeat recline
EconomyBeechcraft 1900D74 cm43 cm5 cm

Atsa Airlines baggage allowance

Fees and allowances vary by route, fare and status.

Baggage

The weight allowed as hand luggage is 05 kg., whose measurements must be 40 cm long, 36 cm wide and 20 cm height as maximum and the quantity of 01 piece. The weight allowed as checked baggage is 23 kg and the quantity of 01 piece for Plus Fare. Excess baggage is not allowed.The weight allowed as checked baggage is 15 kg and the quantity of 01 piece for Flex Fare. Excess baggage is not allowed. Does not include hold luggage for Basic Fare. You can add 01 piece of checked baggage with extra cost, in the purchase process on the web or by calling our call center

Aero Transporte SA - ATSA Baggage rules

Travel policies

Infants

Infants (age under two years) do not occupy a seat. Infant less than 10 days old must travel with a medical certificate. One infant per adult will be allowed, who must be legally responsible for the minor (over 18 or parents) and psychologically stable. The number of infants allowed per aircraft may vary due to the capacity of the equipment operating and due to safety reasons.

Aero Transporte SA - ATSA Infants policy

Check in rules

Check-In must be only at airport 02 hours prior flight departure. Once checked by Atsa staff in Counter you will receive your boarding pass. You must be at least 60 minutes before flight departure at gate.

Aero Transporte SA - ATSA Check-in rules

Unaccompanied minors

Minor between 07 and 15 years less one day, traveling alone. Porting required: Notarial (original) Permit, copy of ID and UM format. It cannot occupy and emergency seat. The service must be requested and informed with a minimum of 48 hours in advance of the flight and must be confirmed for acceptance, otherwise its acceptance is conditional due to the limitation of this service per flight. Maximum allowed: 02 minors per flight

Unaccompanied minors in Aero Transporte SA - ATSA

On-time performance

78.52%On-time arrivals
17.04 minAverage delay
99.13%Completion rate
0.87%Cancellation rate

Atsa Airlines FAQs

Find quick answers to the most common questions about flying with Atsa Airlines.

What should I do if my Atsa Airlines confirmation email has not arrived?

If it has not arrived after 20 minutes, email [email protected]. For agency bookings, contact the original agent.

How early should I arrive at the Atsa Airlines check-in counter?

Arrive at least 2 hours before departure.

Who cannot use Atsa Airlines online check-in?

Online check-in excludes groups, unaccompanied minors, infants, special-service bookings and Beechcraft1900 flights.

Can I change my assigned Atsa Airlines seat after online check-in?

No. The assigned seat cannot be changed.

Does Atsa Airlines accept pets on Beechcraft1900 flights?

No. Pets are not accepted because of the safety and capacity limits of the 19-seat aircraft.

What is the Atsa Airlines cabin-baggage allowance?

You may bring one cabin bag weighing up to 5 kg and measuring no more than 40 × 20 × 30 cm.

Does Atsa Airlines Basic include checked baggage, and how can I add it?

No. You can buy one 15 kg checked bag during website booking or through the call centre.

What is the Atsa Airlines checked-bag size limit, and is excess baggage accepted?

The combined dimensions must not exceed 158 cm. Excess baggage is not accepted because of aircraft capacity limits.

What infant items may I bring on Atsa Airlines?

You may bring a small diaper bag or one folding umbrella stroller.

How can I report lost, damaged or delayed baggage to Atsa Airlines?

Bring your identification and boarding pass to the counter and submit a formal claim.