Airports / Iowa / TNU
Newton Municipal Airport.
Newton, Iowa · 953 ft elevation. A private-aviation gateway on the Bravo register.
4.7/5
Google rating
19 ratings
0
Operators based
953
Elevation ft
Google rating
Google reviews
Field elevation
Nearest alternate
Field standing
#21 / 43
Iowa airports by Google rating
4.7★ across 19 Google ratings , ranked against 43 rated IA fields.
30 nm
To the nearest alternate
Des Moines International Airport (DSM), 2 fields within 50 nm.
Overview
Newton Municipal Airport (KTNU / TNU) is a general aviation field serving Newton, Iowa. Field elevation is 953 feet above sea level. Free of scheduled airline operations, it serves business aviation, charter flights, and local general aviation.
While no charter operators list TNU as their home base, the field is reachable for repositioned charter aircraft from nearby bases. The closest alternate fields are Des Moines International Airport (DSM, 30 nm), Ottumwa Regional Airport (OTM, 43 nm), and Waterloo Regional Airport (ALO, 60 nm). The field has a single 5,600-foot paved runway, long enough for charter aircraft up to heavy jets.
Trip costs from TNU are driven by the aircraft category flown and how far it must reposition. You may also see the field referenced as Earl Johnson Field. Browse operators flying from the area or estimate a trip cost from TNU to plan your flight.
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Field capability
ICAO
KTNU
IATA
TNU
FAA / Local
TNU
Elevation
953 ft
Coordinates
41.6744° N · 93.0217° W
Airspace
E · EchoClass E, EchoControlled airspace reaches the surface for instrument approaches, but there is no control tower on the field.Source: FAA NASR class airspace
Size
Small
Scheduled svc
No
Elevation vs IA fields
state range 547–1,488 ft
At 953 ft, TNU sits lower than 70% of the 60 Iowa fields on the register.
Runways & aircraft access
1 runway
longest 5,600 ft
- 14/325,600 ft × 100 ftAsphaltLighted
Which aircraft can operate here
vs longest paved runway 5,600 ft
TNU's 5,600 ft paved runway typically supports charter aircraft up to heavy jets.
- Turboprop3,000 ft
- Light Jet3,500 ft
- Midsize Jet4,500 ft
- Super-Midsize Jet5,000 ft
- Heavy Jet5,500 ft
- VIP Airliner6,000 ft
Class minimums are sea-level planning rules of thumb. A specific aircraft's balanced-field length varies with weight, temperature, and field elevation. Confirm performance with the operator.
Access & alternates
Closest alternate fields by great-circle distance, every listing links to its own field brief.
- 30nmDSMDes Moines International AirportDes Moines
- 43nmOTMOttumwa Regional AirportOttumwa
- 60nmALOWaterloo Regional AirportWaterloo
- 60nmCIDThe Eastern Iowa AirportCedar Rapids
- 74nmFODFort Dodge Regional AirportFort Dodge
- 86nmCCYNortheast Iowa Regional AirportCharles City
Location
Open the full mapKTNU · Newton Municipal Airport · Newton, IA
Flight times from here
Approximate nonstop block times from TNU on a typical midsize charter jet. Faster classes trim these; add positioning and taxi for the real schedule.
| Destination | Distance | Block time |
|---|---|---|
| Chicago (ORD) | 230 nm | 56m |
| Nashville (BNA) | 446 nm | 1h 26m |
| Denver (DEN) | 540 nm | 1h 39m |
| Dallas (DAL) | 561 nm | 1h 42m |
| Vail / Eagle (EGE) | 644 nm | 1h 54m |
| Aspen (ASE) | 649 nm | 1h 55m |
| Austin (AUS) | 725 nm | 2h 5m |
| Washington DC (IAD) | 730 nm | 2h 6m |
Common questions
- What size private jets can use TNU?
- Newton Municipal Airport's longest paved runway is 5,600 ft, which typically supports charter aircraft up to heavy jets. Lighter classes (turboprops, light and midsize jets) operate comfortably; confirm exact performance for a specific tail with the operator, since balanced-field length shifts with weight, temperature, and elevation.
- What is the longest runway at TNU?
- Newton Municipal Airport has one runway; the longest measures 5,600 ft on a paved surface and is lit for night operations.
- What is the nearest major airport to TNU?
- The closest alternate is Des Moines International Airport (DSM), about 30 nm away, followed by Ottumwa Regional Airport (OTM) at 43 nm. Operators often position aircraft between these fields depending on ramp space and availability.
- How long is a flight from TNU to major cities?
- Typical block times on a midsize jet: Chicago about 56m (230 nm), Nashville about 1h 26m (446 nm), Denver about 1h 39m (540 nm). Faster classes trim these times; add positioning and taxi for the real schedule.